diff --git a/src/main/java/com/tiedup/remake/v2/bondage/TyingInteractionHelper.java b/src/main/java/com/tiedup/remake/v2/bondage/TyingInteractionHelper.java
index 02e9939..99350de 100644
--- a/src/main/java/com/tiedup/remake/v2/bondage/TyingInteractionHelper.java
+++ b/src/main/java/com/tiedup/remake/v2/bondage/TyingInteractionHelper.java
@@ -85,9 +85,11 @@ public final class TyingInteractionHelper {
 
         TyingTask currentTask = playerState.getCurrentTyingTask();
         if (currentTask == null
+            || !(currentTask instanceof V2TyingPlayerTask)
             || !currentTask.isSameTarget(target)
             || currentTask.isOutdated()
             || !ItemStack.matches(currentTask.getBind(), stack)) {
+            // Start new task (also handles case where existing task is V1 TyingPlayerTask)
             playerState.setCurrentTyingTask(newTask);
             newTask.start();
         } else {
@@ -97,7 +99,7 @@ public final class TyingInteractionHelper {
         newTask.update();
 
         if (newTask.isStopped()) {
-            stack.shrink(1);
+            // Item already consumed by V2TyingPlayerTask.onComplete() — don't shrink again
             playerState.setCurrentTyingTask(null);
             TiedUpMod.LOGGER.info("[TyingInteraction] {} tied {}", player.getName().getString(), target.getName().getString());
         }