I don't have any Gorilla Glue myself (yet), but I've used it a couple of times in a buddy's shop. I was impressed with the stuff. Are you claiming it's lighter than epoxy due to the expanding foam structure? (I'm sure you are). When I think about it, that's gotta be the perfect way to put the wings on this plane since there's a number of gaps anyhow. I ended up epoxying mine and then used thick CA to plug the gaps. I probably have all kinds of weight there. I've watched GG expand and it would have taken care of everything all at once. That's probably a real good tip that everyone can use (well, those that haven't built their planes yet).

Chuck

Edit: No, I don't know either of those two guys. There are four clubs in my local area, and they probably belong to one of the other three that I don't belong to. I'm with the Thompson Prop Busters...but then there's MARCS, Balsa Bashers, and the Burton Club (not sure of their official name).