To late . Actually I stuffed a 10 oz tank in there, so with that and some foam it kept it pretty well formed. I have covered my wings, and I am getting ready to glue on the tail faethers so I can get to the fuse, then finish my wings. Here is what I have so far, both need touching up, but they are almost done. need the fuse to see where everything will go on the other side of the wing.