Hey guys. I have a Diablo and here are some thoughts. I never had radio problems with it and it flew OK with the single pod. It was tail heavy and I had to add about 1/2 oz of lead to the front. When I converted it to the duel pod and short wings it did not fly well at all. I think it was underpowered. Great Planes has had some good planes but this was just a bit off the mark. I think it has potential if they had put a bit more power in it. There are options for a PNP and I have had gread success with the ParkZone Typhoon2 and T-28.
Paul