RE: engine/wing question
I am running an OS FP .25 right now with a little leakage around the front hubwith no problems at all. The only thing that looks a little questionable is the wing where its joined? Did you put on the fiberglass strip when you joined the two halves? If it has the plywood diehedral brace you should be OK but if its butt glued together I would put the fiberglass strip on. Just my .02 cents