Scooter,

Look through this thread. The small ailerons were a commonm target for modification. They taper from root to tip. I did not install any wingtip at all, mine is just chopped. I increased the tip width by 1/4" and left the root width the same others did much more. Mine rolls quickly enough for nearly any sport pilot. Chopping the wing tips probably helped as much as increased aileron area. The stick built surfaces are certainly lighter then solid balsa so why buy more wood? This plane tends to come out tailheavy if using a 45 sized engine. So adding weight in the tail with solid surfaces will only worsen the problem. The Fuse aft of the wing is overbuilt and lightening holes help you here with the tail weight problem. Consider some of the tail weight reduction detailed on this thread.

Scott