When I converted the wing on my Avistar to a bolt on, I cut it in half and made a new center rib out of ply with a tongue on the front. Added some hardwood in the front of the saddle for the tongue to fit into and more at the back for the bolts. I also removed all the dihedral too.

I wish I hadn't removed the aileron torque rods though as it would be easy to cut the stock ailerons and mod them for flaps. i had already put two servos in the wings for the ailerons anyway.

Still need to cover the wing and install engine/radio , etc. Trying to decide if I want to make a cowl for the engine like the RCM article for the Tiger. http://www.rcmplans.com/issues/reque...-092000-1.html

Bill S.