thank you for your response.
i did clean off piston top and top of cylinder as well as head--replaced gasket. there was not really any movement in piston side to side. i also saw no wall scoring.. i feel better about myself, i actually checked all of that!!! i have a comp tester and it reads 65#---could the cylinder or crank case have a crack???--it runs when you give a little shot of gumout and stays running true even when you put into choke(plate does close)
thank you again
