I'm using a tobeco KFL+ clone. This piece came with 3 screws for the juice port, one of which I have stripped due to inexperience, the other just seemed to lose its grip. The threads wore out? I'm being very careful with this last one, and was wondering if anyone knows the size of this screw? I can go to a hardware store and match it up, but I don't like wasting time lol. If anyone knows, I would appreciate it very much.