couple more wing mounting thoughts
Yup, read the Vans extra material a few times. Then you need to make a decision about how you want to check for flap fit where it "kisses" (to use Vans term) the bottom of the fuse. Trim your rear spar on the wing per instructions, then mount wings and clamp in place, again per angle of incidence instructions, etc, etc. Remount your flaps and bring them up in trail. If you are lucky, they will fit nicely. Generally (IMHO) they don't. You will then have to decide whether you wish to adjust the angle of incidence to optimize that fit, making it the same on both wings of course, or not. If you do decide to do so, you will need to remeasure and re-shim your HS per Vans instructions, which is no big deal mechanically. If you don't you may decide to cut off the flap material if the fit is not right. In my case, all measurements were optimized, the rear spar hole was nailed dead center with abundant clearance from edges.. and I had to cut off the piece of skin on the flap (or I suppose one could have made a fiberglass layup to take up misfit where the flaps did not "kiss" the bottom of the fuse). If the misfit is any more than 1/8" or so, you will have trouble joggling the metal to fit. Advice in sum? Mount and clamp the wings, fit the flaps, and do nothing until the next day when you decide what would be required to make everything fit optimally including all critical clearances.
Hope this helps a little.
Regards,
Len
N72ML, tipper, dual Cheltons/all glass
OSH with much, much luck