Grey Beard that is sharp Kaos! I like your ideas of the balsa inside as it would be better, I have done several airplanes with just attaching the canopy to the Monokote with no problems after years of flying, it is a pain but i just poke a thousand (give or take) little holes where the canopy attaches and just use RC56 or the 560 same. I think I will do the little attach point as described in the future as it would be easier than my method I am thinking. I have a sweet Kaos 40 (Bridi) built by a friend who died about 8 yrs ago and I still fly it occasionally, makes me look like I know how to land!! has a OS 46 before the AX and is great to fly.