So the instruction manual has you mount the side panels, then move on to the doors. The door striker has a bracket that mounts to the body, with a lot of adjustability (Up/down, Forward/aft). The instructions don't have you mount the bracket until you're halfway into the door assembly and have you site the striker before adding the bracket. If you hang your body off by too much, this bracket becomes a major issue. I experienced it. There is no reason I see to not loosely mount that bracket at any prior stage, as in today. Go do it now. I wasted a ton of time trying to figure out how to solve the problems I created. I really feel dumb about it. (Page 419 of my Revision).
Also, my kit shipped with 1/2" x 1 1/4" carriage bolts, while the instructions call for 1 1/8"