I have been considering building one of your kits, the delta Im building is my own design also, I may do a build thread but Im going to test the first prototype maybe this weekend, Ive always been a fan of highspeed deltas and decided to do one based on the many Ive had in the past, I noticed yours has a box for radio fuel etc, Ive managed to build mine all inside the airfoil itself and still got a 10 oz hayes inside along with radiogear. Im going to be out of touch but I will show you my design, I think you might like it. It will for sure be the fastest Ive owned even with side exhaust standard muffler Speed 50gt. Next version will be cowled up and piped 55gt webra and a reflexed airfoil at they center section transforms to a very fast glider airfoil at the tips. layout is close to holysmoke wing sweep. may end up calling it a holys**t...........................ED