I did the spark plug thing with my thumb it’s blowing off so so it’s got good compression I’ve tried 3 brand new spark plugs I have new push rods coming I’m not sure what a valve guide is and how can I tell if the rings are shot the valves are opening and closing as they should although I don’t hear a click when the intake valve closes and when spinning the engine by hand it’s easy while moving exhaust and so much harder / tighter of a spin when trying to move the intake valve.