diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/core/commands/subcommands/ResearchCommand.java b/src/main/java/io/github/thebusybiscuit/slimefun4/core/commands/subcommands/ResearchCommand.java
index eeca270f7..a4ab4cac1 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/core/commands/subcommands/ResearchCommand.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/core/commands/subcommands/ResearchCommand.java
@@ -1,6 +1,7 @@
 package io.github.thebusybiscuit.slimefun4.core.commands.subcommands;
 
 import java.util.Optional;
+import java.util.function.UnaryOperator;
 
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
@@ -73,8 +74,10 @@ class ResearchCommand extends SubCommand {
         Optional<Research> research = getResearchFromString(input);
 
         if (research.isPresent()) {
-            research.get().unlock(p, true);
-            SlimefunPlugin.getLocal().sendMessage(sender, "messages.give-research", true, msg -> msg.replace(PLACEHOLDER_PLAYER, p.getName()).replace(PLACEHOLDER_RESEARCH, research.get().getName(p)));
+            research.get().unlock(p, true, player -> {
+                UnaryOperator<String> variables = msg -> msg.replace(PLACEHOLDER_PLAYER, player.getName()).replace(PLACEHOLDER_RESEARCH, research.get().getName(player));
+                SlimefunPlugin.getLocal().sendMessage(player, "messages.give-research", true, variables);
+            });
         }
         else {
             SlimefunPlugin.getLocal().sendMessage(sender, "messages.not-valid-research", true, msg -> msg.replace(PLACEHOLDER_RESEARCH, input));
diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/core/guide/SlimefunGuideImplementation.java b/src/main/java/io/github/thebusybiscuit/slimefun4/core/guide/SlimefunGuideImplementation.java
index 71d4a6729..a956157ad 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/core/guide/SlimefunGuideImplementation.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/core/guide/SlimefunGuideImplementation.java
@@ -1,5 +1,7 @@
 package io.github.thebusybiscuit.slimefun4.core.guide;
 
+import java.util.function.Consumer;
+
 import org.bukkit.GameMode;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
@@ -11,7 +13,6 @@ import io.github.thebusybiscuit.slimefun4.implementation.guide.ChestSlimefunGuid
 import me.mrCookieSlime.Slimefun.SlimefunPlugin;
 import me.mrCookieSlime.Slimefun.Objects.Category;
 import me.mrCookieSlime.Slimefun.Objects.SlimefunItem.SlimefunItem;
-import me.mrCookieSlime.Slimefun.api.Slimefun;
 
 /**
  * This interface is used for the different implementations that add behaviour
@@ -53,17 +54,15 @@ public interface SlimefunGuideImplementation {
 
     void displayItem(PlayerProfile profile, SlimefunItem item, boolean addToHistory);
 
-    default void unlockItem(Player p, SlimefunItem sfitem, Runnable callback) {
+    default void unlockItem(Player p, SlimefunItem sfitem, Consumer<Player> callback) {
         Research research = sfitem.getResearch();
 
         if (p.getGameMode() == GameMode.CREATIVE && SlimefunPlugin.getRegistry().isFreeCreativeResearchingEnabled()) {
-            research.unlock(p, true);
-            Slimefun.runSync(callback, 5L);
+            research.unlock(p, true, callback);
         }
         else {
-            research.unlock(p, false);
             p.setLevel(p.getLevel() - research.getCost());
-            Slimefun.runSync(callback, 103L);
+            research.unlock(p, false, callback);
         }
     }
 
diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/core/researching/Research.java b/src/main/java/io/github/thebusybiscuit/slimefun4/core/researching/Research.java
index 34db96b0f..b881da69d 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/core/researching/Research.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/core/researching/Research.java
@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.Consumer;
 
 import org.bukkit.Bukkit;
 import org.bukkit.GameMode;
@@ -195,15 +196,29 @@ public class Research implements Keyed {
         return creativeResearch || p.getLevel() >= cost;
     }
 
+    /**
+     * This unlocks this {@link Research} for the given {@link Player} without any form of callback.
+     * 
+     * @param p
+     *            The {@link Player} who should unlock this {@link Research}
+     * @param instant
+     *            Whether to unlock it instantly
+     */
+    public void unlock(Player p, boolean instant) {
+        unlock(p, instant, pl -> {});
+    }
+
     /**
      * Unlocks this {@link Research} for the specified {@link Player}.
      * 
      * @param p
      *            The {@link Player} for which to unlock this {@link Research}
      * @param instant
-     *            Whether to unlock the research instantly
+     *            Whether to unlock this {@link Research} instantly
+     * @param callback
+     *            A callback which will be run when the {@link Research} animation completed
      */
-    public void unlock(Player p, boolean instant) {
+    public void unlock(Player p, boolean instant, Consumer<Player> callback) {
         if (!instant) {
             Slimefun.runSync(() -> {
                 p.playSound(p.getLocation(), Sound.ENTITY_BAT_TAKEOFF, 0.7F, 1F);
@@ -219,14 +234,14 @@ public class Research implements Keyed {
 
                     if (!event.isCancelled()) {
                         if (instant) {
-                            finishResearch(p, profile);
+                            finishResearch(p, profile, callback);
                         }
                         else if (SlimefunPlugin.getRegistry().getCurrentlyResearchingPlayers().add(p.getUniqueId())) {
                             SlimefunPlugin.getLocal().sendMessage(p, "messages.research.start", true, msg -> msg.replace(PLACEHOLDER_RESEARCH, getName(p)));
                             playResearchAnimation(p);
 
                             Slimefun.runSync(() -> {
-                                finishResearch(p, profile);
+                                finishResearch(p, profile, callback);
                                 SlimefunPlugin.getRegistry().getCurrentlyResearchingPlayers().remove(p.getUniqueId());
                             }, (RESEARCH_PROGRESS.length + 1) * 20L);
                         }
@@ -236,9 +251,10 @@ public class Research implements Keyed {
         });
     }
 
-    private void finishResearch(Player p, PlayerProfile profile) {
+    private void finishResearch(Player p, PlayerProfile profile, Consumer<Player> callback) {
         profile.setResearched(this, true);
         SlimefunPlugin.getLocal().sendMessage(p, "messages.unlocked", true, msg -> msg.replace(PLACEHOLDER_RESEARCH, getName(p)));
+        callback.accept(p);
 
         if (SlimefunPlugin.getRegistry().isResearchFireworkEnabled() && SlimefunGuideSettings.hasFireworksEnabled(p)) {
             FireworkUtils.launchRandom(p, 1);
diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/BookSlimefunGuide.java b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/BookSlimefunGuide.java
index 66788027e..9b8a9607a 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/BookSlimefunGuide.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/BookSlimefunGuide.java
@@ -165,7 +165,7 @@ public class BookSlimefunGuide implements SlimefunGuideImplementation {
                                             openCategory(profile, category, page);
                                         }
                                         else {
-                                            unlockItem(p, item, () -> openCategory(profile, category, page));
+                                            unlockItem(p, item, pl -> openCategory(profile, category, page));
                                         }
                                     }
                                     else SlimefunPlugin.getLocal().sendMessage(p, "messages.not-enough-xp", true);
diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/ChestSlimefunGuide.java b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/ChestSlimefunGuide.java
index 6e6ca9518..634670478 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/ChestSlimefunGuide.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/guide/ChestSlimefunGuide.java
@@ -229,7 +229,7 @@ public class ChestSlimefunGuide implements SlimefunGuideImplementation {
                                     openCategory(profile, category, page);
                                 }
                                 else {
-                                    unlockItem(pl, sfitem, () -> openCategory(profile, category, page));
+                                    unlockItem(pl, sfitem, player -> openCategory(profile, category, page));
                                 }
                             }
                             else {