Finished the bike today started right up . The motor put out to much torque for the clutch . I need more clamping pressure . The clutch has been adjusted the right way the wrong way and the main spring in the center of the housing adjusted also . I know there are motors that made more power that run this clutch . What do you guy do to them . Spec. on motor and bike .66 cc jet ,mild port work 1 mm wider intake an exhaust .5 mm higher . Cylinder an case matched . Piston .5 mm cut at transfer port , intake cut to size of port on piston skirt . Head cut .5 mm to up compression . Carb is Dellorto sha 16-16 , Jaguar cdi box . A pipe set to run in 3500-7000 rpm range . The rear sprocket is a 44 . The people helping me on this project have owned built motorized for some time so the clutch was adjusted right , all the part are in the right place . Thanks Dan P.S. I did a search first