Can anyone please tell me what size screws are in the spyder center differential on the hyper 7 pcr? I broke one of these screws and since I'm always seem to be needing a screw or two for this buggy I'm thinking of buying a screw kit. Anyone have any preferences of screw kit manufactures that have a complete kit for the H7?? I'm looking at a kit from RC Screwz but want to make sure the center diff. screw will be included.