Hey guys, if this is in the wrong thread i apologize, I tried to use the technical thread but it wouldn't load...anyways I was doing the head gasket on a 2013 Chevy Sonic and now I'm reassembling the head after getting it resurfaced. It seems GM engineers decided not to put a keyway or some sort of "one way only way" design on the cam sprockets. So basically, how do I know I'm putting them on in the correct orientation? I know which one is exhaust and which is intake, I just don't know how to know I'm putting them on correctly. When I slide them onto the camshafts they spin freely infinitley,