so.... flywheel key hasnt sheared completly, but has started to... so I replaced it. But, the problem is definatly compression... so thanx 2strokepower. Im still bumfuzzled as to why it would just loose compression like that and die. So... rings fryed maybe? Havent found and leaks around head gasket... or any air leaks anywhere. Reeds are new.... Any other common cause for quick loss of compression?