Originally Posted by biuppa
...My one issue is the under wing air intakes seem flimsy. I'm looking around for some way to re-inforce that area. Any ideas?
Only if you intend to land on it. As long as it doesn't cave, the thinner the better. But if you must then glass it or straight thinned epoxy with fine glass milled fiber mixed with light spackle. WBPU is a good top coat but isn't structural.
But really there no need.