Just sent you a PM.

I'm assuming this is still the same the Alpha 40 you had last year, and your right on the lack of support - just the LE, then the sheeting to the spar. The sheeting is a bit thin on the leading edge, and once it gets a crack it usually needs to be reinforced underneath. I found out how thin this sheeting is on the one I rebuilt.

I've just picked up a new Alpha 60 RTF which will need rib repair, and some sheeting repair on the wing top near the center section. I'll try to do a repair thread on this one since I didn't get to doing one on the Alpha 40 I rebuilt this spring.

Hogflyer