Before beginning the process of mounting the wingtips, I wanted to make sure the ailerons were exactly centered. I had centered them once before (using the centering template and a straight-edge clamped to the end rib) when the wings were in their vertical rack, but I adjusted them again, now that the wings are on the fuselage. The right aileron pushrod required a couple of turns to get things lined up perfectly.
Once the ailerons were rigged, I began trimming the right wingtip so it would fit to the wing. I cut off about 1/2" from the trailing edge half of the tip so it would fit around the aileron. The fit of the leading edge is pretty atrocious -- I can tell it will require a bit of work. Also, the trailing edge of the tip sticks out about 1/2" beyond the trailing edge of the aileron.