I had tiny leakage where those plugs are and i tried to turn one to make sure its snug and i noticed it was stripped. i pulled the part number its 0332135 but i cant find it anywhere. (2 plastic "cylinder head pressure tap plugs") I was wondering if anyone can help me find the replacement parts or the appropriate screw size. I thought about spraying locktite on it and putting it back but that dont sound too safe to me. The threads are kind of worn, otherwise i could put it on the wax comparator at work to get thread space and OD of screw. Hopefully someone can just tell me where to get it. Or what size screw-plug it is. thx in advance\