Hello. First post here. I have been modifying my gx200 clone in a baja mini bike. At first i put in a flat top piston, ported the head, air filter, exhaust, but left the governor in. It has a torque converter so is rarely over 4500 rpm. The next step was to get a vm22 carb, remove the governor, and mill the head. I did all of that and now it has a knocking sound. I tore it back open and cant find anything hitting. I did remove the governor gear from the crank as well. Could that cause too much crank end play? I havent measured but it seems like it has alot. Is the only way to change end play with removing the side cover gasket? Thanks in advance!