Hi all, I recently bought the 66/80cc kit for my bike, and I've run into a lot of problems with the drive sprocket When I push the clutch in, the sprocket won't turn even with the chain off, and I don't see how you're supposed to pedal the thing like that. So I haven't even been able to start the engine, because I can't even get it moving. Now I can push it along forcefully, and hear the pistons turning on the inside, so I really don't understand why it's doing this? But after pushing it for awhile, the wheel locks up, which I think means the chain is bunching up. Help would be appreciated, this is turning into a mess.