do what the above are telling you. i just checked my cmr and was getting 90 psi on cyl #1. took out a 2.55 shim ( valve wasnt closing) for a 2.35. now i get 125 plus on a cold cylinder
yes , check the pilot jetBefore doing all this work, how is changing the valve clearance going to magically make the cylinder work again, could the carbs possibly be dirt and just not letting gas through?