Today I repeatedly marked, trimmed, and fitted the right wingtip. I'm trying to get everything lined up as close to perfectly as I can before I drill and cleco it on. The leading edge is fitting a lot better, but even with the tip pushed as far forward as I can get it, the trailing edge of the tip is still about 1/4" behind the trailing edge of the aileron. I'll have to so some more trimming, and I might even have to sand off the trailing edge and re-glass it. We'll see.