diff --git a/build.gradle b/build.gradle
index 0916d71..6bb9984 100644
--- a/build.gradle
+++ b/build.gradle
@@ -63,7 +63,7 @@ minecraft {
     }
     runs {
         client {
-            workingDirectory project.file('run/client')
+            workingDirectory project.file('run')
             if (project.use_coremod.toBoolean()) {
                 jvmArg '-Dfml.coreMods.load=' + coremod_plugin_class_name
             }
@@ -78,7 +78,7 @@ minecraft {
         }
 
         server {
-            workingDirectory project.file('run/server')
+            workingDirectory project.file('run')
             if (project.use_coremod.toBoolean()) {
                 jvmArg '-Dfml.coreMods.load=' + coremod_plugin_class_name
             }
diff --git a/gradle.properties b/gradle.properties
index cbaddec..3826634 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,7 +8,7 @@ org.gradle.daemon = false
 tweaked_petroleum_version = 1.3.0
 tweaked_lib_version = 1.0.0
 
-mod_version = 1.1.0
+mod_version = 1.1.1
 maven_group = srki2k
 archives_base_name = tweakedpetroleumgas
 
diff --git a/src/main/java/srki2k/tweakedpetroleumgas/mixin/MixinEventHandler.java b/src/main/java/srki2k/tweakedpetroleumgas/mixin/MixinEventHandler.java
new file mode 100644
index 0000000..0e7aa0d
--- /dev/null
+++ b/src/main/java/srki2k/tweakedpetroleumgas/mixin/MixinEventHandler.java
@@ -0,0 +1,82 @@
+package srki2k.tweakedpetroleumgas.mixin;
+
+import blusunrize.immersiveengineering.common.items.ItemCoresample;
+import blusunrize.immersiveengineering.common.util.ItemNBTHelper;
+import flaxbeard.immersivepetroleum.api.crafting.PumpjackHandler;
+import flaxbeard.immersivepetroleum.common.EventHandler;
+import mekanism.api.gas.Gas;
+import mekanism.api.gas.GasRegistry;
+import net.minecraft.client.resources.I18n;
+import net.minecraft.item.ItemStack;
+import net.minecraftforge.event.entity.player.ItemTooltipEvent;
+import net.minecraftforge.fluids.Fluid;
+import net.minecraftforge.fluids.FluidRegistry;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import srki2k.tweakedpetroleum.api.crafting.TweakedPumpjackHandler;
+import srki2k.tweakedpetroleum.api.ihelpers.IReservoirType;
+
+import java.text.DecimalFormat;
+import java.util.List;
+import java.util.Optional;
+
+@Mixin(value = EventHandler.class, remap = false)
+public class MixinEventHandler {
+
+    @Inject(method = "handleItemTooltip", cancellable = true, at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraftforge/event/entity/player/ItemTooltipEvent;getItemStack()Lnet/minecraft/item/ItemStack;",
+            shift = At.Shift.BEFORE))
+    private static void onHandleItemTooltip(ItemTooltipEvent event, CallbackInfo ci) {
+        ItemStack stack = event.getItemStack();
+
+        if (stack.getItem() instanceof ItemCoresample && ItemNBTHelper.hasKey(stack, "oil")) {
+            final String resName;
+            if (ItemNBTHelper.hasKey(stack, "resType")) {
+                resName = ItemNBTHelper.getString(stack, "resType");
+            } else {
+                resName = "";
+            }
+
+            Optional<IReservoirType> res = PumpjackHandler.reservoirList.keySet().stream().
+                    map(reservoirType -> (IReservoirType) reservoirType).
+                    filter(reservoirType -> reservoirType.getName().equals(resName)).
+                    findFirst();
+            List<String> tooltip = event.getToolTip();
+            if (res.isPresent()) {
+                IReservoirType reservoirType = res.get();
+
+                int amnt = ItemNBTHelper.getInt(stack, "oil");
+                String fluidName;
+                if (reservoirType.getReservoirContent() == TweakedPumpjackHandler.ReservoirContent.LIQUID) {
+                    if (amnt > 0) {
+                        int est = amnt / 1000 * 1000;
+                        Fluid fluid = FluidRegistry.getFluid(reservoirType.getStringFluid());
+                        fluidName = net.minecraft.util.text.translation.I18n.translateToLocal(fluid.getUnlocalizedName());
+                        tooltip.add(2, I18n.format("chat.immersivepetroleum.info.coresample.oil", (new DecimalFormat("#,###.##")).format(est), fluidName));
+                    } else if (reservoirType.getReplenishRate() > 0) {
+                        Fluid fluid = FluidRegistry.getFluid(reservoirType.getStringFluid());
+                        fluidName = net.minecraft.util.text.translation.I18n.translateToLocal(fluid.getUnlocalizedName());
+                        tooltip.add(2, I18n.format("chat.immersivepetroleum.info.coresample.oilRep", reservoirType.getReplenishRate(), fluidName));
+                    }
+                } else if (reservoirType.getReservoirContent() == TweakedPumpjackHandler.ReservoirContent.GAS) {
+                    if (amnt > 0) {
+                        int est = amnt / 1000 * 1000;
+                        Gas g = GasRegistry.getGas(reservoirType.getStringFluid());
+                        fluidName = g.getLocalizedName();
+                        tooltip.add(2, I18n.format("chat.immersivepetroleum.info.coresample.oil", (new DecimalFormat("#,###.##")).format(est), fluidName));
+                    } else if (reservoirType.getReplenishRate() > 0) {
+                        Gas g = GasRegistry.getGas(reservoirType.getStringFluid());
+                        fluidName = g.getLocalizedName();
+                        tooltip.add(2, I18n.format("chat.immersivepetroleum.info.coresample.oilRep", reservoirType.getReplenishRate(), fluidName));
+                    }
+                }
+            } else {
+                tooltip.add(2, I18n.format("chat.immersivepetroleum.info.coresample.noOil"));
+            }
+        }
+        ci.cancel();
+    }
+}
diff --git a/src/main/resources/mixins.tweakedpetroleumgas.json b/src/main/resources/mixins.tweakedpetroleumgas.json
index dc4e2af..4d097bc 100644
--- a/src/main/resources/mixins.tweakedpetroleumgas.json
+++ b/src/main/resources/mixins.tweakedpetroleumgas.json
@@ -3,6 +3,7 @@
   "package": "srki2k.tweakedpetroleumgas.mixin",
   "compatibilityLevel": "JAVA_8",
   "mixins": [
+    "MixinEventHandler",
     "MixinReservoirType",
     "MixinTileEntityPumpjack"
   ],