diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearch.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearch.kt
index ad276b238..2a5ab14df 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearch.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearch.kt
@@ -3,25 +3,23 @@ package ru.dbotthepony.mc.otm.android
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
 import net.minecraft.ChatFormatting
 import net.minecraft.nbt.CompoundTag
-import net.minecraft.nbt.ListTag
 import net.minecraft.network.chat.Component
-import net.minecraft.resources.ResourceLocation
 import net.minecraft.server.level.ServerPlayer
 import net.minecraft.world.entity.player.Player
 import net.minecraftforge.common.MinecraftForge
 import net.minecraftforge.common.util.INBTSerializable
+import net.minecraftforge.eventbus.api.Cancelable
 import net.minecraftforge.eventbus.api.Event
+import net.minecraftforge.eventbus.api.Event.HasResult
 import ru.dbotthepony.mc.otm.OverdriveThatMatters
 import ru.dbotthepony.mc.otm.capability.MatteryPlayerCapability
 import ru.dbotthepony.mc.otm.capability.awareItemsStream
 import ru.dbotthepony.mc.otm.core.TextComponent
 import ru.dbotthepony.mc.otm.core.TranslatableComponent
-import ru.dbotthepony.mc.otm.core.nbt.getCompoundList
 import ru.dbotthepony.mc.otm.core.registryName
 import ru.dbotthepony.mc.otm.core.nbt.set
 import ru.dbotthepony.mc.otm.milliTime
 import ru.dbotthepony.mc.otm.network.synchronizer.FieldSynchronizer
-import ru.dbotthepony.mc.otm.registry.MRegistry
 import ru.dbotthepony.mc.otm.triggers.AndroidResearchTrigger
 import java.io.InputStream
 import kotlin.math.absoluteValue
@@ -49,20 +47,27 @@ class AndroidResearch(val type: AndroidResearchType, val capability: MatteryPlay
 			return
 		}
 
-		onRefunded()
+		onUnResearched()
 		isResearched = false
 	}
 
-	fun onRefunded() {
+	data class OnResearched(val research: AndroidResearch) : Event()
+	data class OnUnResearched(val research: AndroidResearch) : Event()
+
+	fun onUnResearched() {
 		for (result in type.results) {
-			result.onRefunded(this)
+			result.onUnResearched(this)
 		}
+
+		MinecraftForge.EVENT_BUS.post(OnUnResearched(this))
 	}
 
 	fun onResearched() {
 		for (result in type.results) {
 			result.onResearched(this)
 		}
+
+		MinecraftForge.EVENT_BUS.post(OnResearched(this))
 	}
 
 	/**
@@ -114,16 +119,14 @@ class AndroidResearch(val type: AndroidResearchType, val capability: MatteryPlay
 		return true
 	}
 
+	data class OnRefunded(val research: AndroidResearch) : Event()
+
 	/**
 	 * Grants all (or some) resources back consumed by [consumeResearchCost].
 	 *
 	 * Returns true whenever player accepted all resources refunded, false otherwise.
 	 */
-	fun refund(simulate: Boolean): Boolean {
-		if (simulate) {
-			return true
-		}
-
+	fun refund(): Boolean {
 		if (type.experienceLevels > 0) {
 			var experiencePoints = 0
 
@@ -148,6 +151,8 @@ class AndroidResearch(val type: AndroidResearchType, val capability: MatteryPlay
 			}
 		}
 
+		MinecraftForge.EVENT_BUS.post(OnRefunded(this))
+
 		return true
 	}
 
diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchResult.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchResult.kt
index 39e43b686..8dfa6821d 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchResult.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/android/AndroidResearchResult.kt
@@ -32,7 +32,7 @@ object AndroidResearchResults {
 			feature.strength++
 		}
 
-		override fun onRefunded(research: AndroidResearch) {
+		override fun onUnResearched(research: AndroidResearch) {
 			val feature = research.capability.getFeature(AndroidFeatures.NANOBOTS_ARMOR) ?: return
 			feature.strength--
 		}
@@ -48,7 +48,7 @@ object AndroidResearchResults {
 			feature.speed++
 		}
 
-		override fun onRefunded(research: AndroidResearch) {
+		override fun onUnResearched(research: AndroidResearch) {
 			val feature = research.capability.getFeature(AndroidFeatures.NANOBOTS_ARMOR) ?: return
 			feature.speed--
 		}
@@ -82,7 +82,7 @@ interface AndroidResearchResult {
 			research.capability.addFeature(feature ?: return)
 		}
 
-		override fun onRefunded(research: AndroidResearch) {
+		override fun onUnResearched(research: AndroidResearch) {
 			research.capability.removeFeature(feature ?: return)
 		}
 
@@ -122,7 +122,7 @@ interface AndroidResearchResult {
 			}
 		}
 
-		override fun onRefunded(research: AndroidResearch) {
+		override fun onUnResearched(research: AndroidResearch) {
 			val get = research.capability.getFeature(feature ?: return)
 
 			if (get == null) {
@@ -160,7 +160,7 @@ interface AndroidResearchResult {
 	/**
 	 * Called when research is refunded
 	 */
-	fun onRefunded(research: AndroidResearch) {}
+	fun onUnResearched(research: AndroidResearch) {}
 
 	companion object {
 		private val LOGGER = LogManager.getLogger()
diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/MatteryPlayerCapability.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/MatteryPlayerCapability.kt
index 36c96ccb7..f7bccfebb 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/MatteryPlayerCapability.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/MatteryPlayerCapability.kt
@@ -492,7 +492,7 @@ class MatteryPlayerCapability(val ply: Player) : ICapabilityProvider, INBTSerial
 				instance.unResearch()
 
 				if (refund) {
-					instance.refund(simulate = false)
+					instance.refund()
 				}
 			}
 		}