I just brought home a 66-3 and as it was very oily decided to remove the sideplate to clean it up. Unfortunatley I have really messed up. At first the entire mechanism was locked up. I got things flowing again but now the cylinder will not advance unless it is pointed barrel down. Is there a torsion spring on the hand? I never saw,heard, or felt anything fly off. Is there a good schematic I can follow to make sure all the parts are there?