oil pump quit, had head and piston bored and honed with new piston. eliminated oil tank and mix gas myself instaed of relying on pump. ran fine for 6 weeks then on last ride bike would just die while riding, until it just won´t start at all. rather confused its getting gas, it has spark, and compression but fuel is not making it to the cylinder to make bike continue to run. reeds are ok too no reverse compression out back of carb. any ideas?