After fitting the wingtips, it's clear that the Avipro wingtip fairing isn't long enough to match up to the aileron. Accordingly, I used 5 minute Epoxy to attach a small amount of styrofoam to the tips, trimmed them with a hacksaw blade to match the contour, and covered the foam with epoxy/fiberglass. A total of 4 ply's were placed, but a lot of the first two were sanded down. This was then followed by a couple applications of epoxy and microballoons and more sanding.