I thought this would be a fun and instructive page for newbies to learn what NOT to do. I'll start with a partial list, and you guys add to it. Eventually it might become a sticky Mainsprings hooked together. If placed on top of one another, mainsprings will mate, and there's no way in creation to get them back apart. Always place them so they wind in opposite directions, and they can't do that. Count wheel upside down. Some run one way, some the other. Always note which way they go on when taking them off. Helper springs not attached. Levers won't work right, and the springs interfere with other things so they can't work either. Pivots bent by trying too much force to get the pivots in place and the plates back together. Patience is the key, and MINIMAL force. Replace good parts. It's easy to assume that this or that part is defective, weak, non-functioning. You know what assume does, so don't do it. Be sure, then do.