Installed NOS cylinder,piston and rings(3). New case gaskets and crank seals, also new reed, needle valve and seat, carb gasket. New coil, points and condenser. Motor has brass bushings not needle bearings on crankshaft, no noticeable play in crank. Cylinder prep was light hone to clean wall. Ring end gaps are .015, staggered and on solid material not on any ports. Problem is I get only 60lbs. of compression, this seems to be the starting problem. I have spark and see gas movement in throttle body when priming. Sometimes I had it started but most times it won't start. Tried starting fluid in cylinder and it won't fire. Checked plug many times and it has continual fire. Timing is set by flywheel key(new key and flyweight). Seems to me 60lbs. is no good, specs call for 70 to 85 lbs. Am I overlooking something ?