1. Secure one rail, have the cross piece that goes between the rails tighten down, move the cross piece from one end to the other, tighten the end of the 2nd rail as you move down the length of the rails. This assumed that you have leveled both rails and the cross piece.
2. Well, no, but that's as accurate as the tools you have, you'll need adjustability in the system.
3. Yes, that's correct. |