Question on my first build. I have a 2 stroke china girl engine that I just installed on my Worksman frame, I installed the chain, sprocket and connected it to the engine however the rear wheel does not spin freely(it spun freely prior to connecting the chain)> I thought it might have something to do with the clutch but it has the same resistance with the clutch handle in or out. I am reluctant to start the engine for the first time until I get some idea if this is normal or not. I was able to turn the wheel by using my hand spinning the wheel (I only turned it 3/4 of a revolution with the spark plug removed) It sounded like the piston was moving inside the engine when the wheel turned, is this normal? I didn't want to force anything or continue until I checked here first.