I just picked a 1/3 scale Cub. I was told that it was a Balsa USA, but it's smaller than than a B.Usa. The wing span is 130" versus 140 on the B.USA. and the wing spars and the cockpit area look different. I need to find a new cowling and window set. You guys got any ideas ? trying to put in some pics. can some one tell how the put in pics?