I know I'll prolly get flamed for this ,but a good flying friend lost his H-9 260 this summer due to a hit,coming in on final.We had talked about going to PCM before this and I explained to him he needed to test the plane out with a PPM first then switch to a PCM . His idea was, if the failsafe is set correctly you may not loose the plane !WRONG! I did my best to tell him a plane can go into failsafe mode at any time and in any position if hit with enough interference. Some people say a PCM won't mask interference while others say it will.
If you maybe would have used a PPM to ground check with,you may have found out there was a problem before hand and would have saved your plane .
Sorry for your loss of what sounds like 2 nice planes and some spendy equipment.