So I'm basically having the exact same issue as https://www.spigotmc.org/threads/pr...when-more-than-2-of-them-is-presented.408754/. The only problem is that their fix isn't what I need at all. I'm basically trying to create custom recipes that require specific metadata. I need the crafting to only be possible if it's a player skull with a specific SkullOwner and a specific displayName/Lore. Now I have this working perfectly, but as mentioned by the creator of that thread if you put more items into the crafting inventory than needed to craft the item some weird duplication happens. I'd appreciate any help on this, I've tried every possible way of doing this for hours and I can't figure it out. I didn't even know this was possible, and I've been playing Minecraft since 2013.