In making a control surface (rudder,aileron etc.) could it be possible to replace the .032 Aluminum spar with one made of fiberglass? The reason I ask is that I no longer have access to the bending brake that I used years ago when I first made these pieces. A while back I discovered that my rudder had a slight twist to it that couldn’t be corrected. I made another one in composite but it turned out way too heavy. So I’m going back to the original style, (RV type). I was thinking of making the spar and skin stiffeners (anything that needs to be bent) in fiberglass because it would be easy to do and then rivet the skins to them. When riveting the aluminum skins to the fiberglass piecesI would back up the backside with a thin aluminum strip or aluminum washers. Think it would work?