Here's a suggestion for those guys that are going to put a turbine in one. The bay where you will put the screws or rubber band is full of fuel tanks so you can't do it that way. Vernon says to glue a dowel next to the rib (a square motor mount beam might work better), drill through the block into the aluminum wing tube, thread the tube and secure the wing with a plastic screw. I have a Katana done that way and it works fine. It also has a dowel in the wing tube where it is tapped to better hold it.

Hal