The common denominator here seems to be that the guys who have been around for a while all use finger tips. I go along with that method too.

Don`t overlook the lateral balance. I guess there`s a fancy machine on the market there for that too? In the days of decent size beer bottles, (showing my age), I`d sit the prop shaft, minus prop, on one of them (empty), and a block of wood under the aft fuselage.

Load the high wing tip (it ain`t ever going to be level from scratch) with suitable size nails until it balances then drive the nails into the wing tip from the outer end and seal the hole with epoxy or whatever.

All simple fixes.

Alan W