For the record, I lost my BobCat XL with elevator non-response (failsafe hold, I guess) a few weeks back - seemed to be having the same problems with elevator response that you are. I was having problems sometimes getting it to respond to elevator commands using the recommended 3301's - it would act like I had switched to low-low rate on the elevators when I hadn't done anything. I wasn't able to completely isolate EXACTLY when it happened, but it seemed to be fairly random and seemed to sometimes happen when I did a low pass (1/2 throttle or so) and started pulling up into a pretty tight turn at the end of the runway while going to full power for climb out (I had a P120 on the BC). Sometimes it seemed to be slow coming around in a tight level turn at altitude, but I kept thinking it was a speed related thing. The BC acted like I only had about 1/3 to 1/2 my normal elevator throw and was so slow coming around I almost bent the elevator stick pulling so hard on it each time it happened. I found that if I backed off the power, it would come on around faster - almost like I was getting elevator blowback which shouldn't have happened using the digital servos. I never did figure out what was happening, so I changed the 3301's out for 9411's for more holding power and torque - just in case I was getting blowback. On the first flight with the new elevator servos, I was about half way through the flight and decided to do a 1/2 throttle, low pass down the runway - like I did before when I had the elevator problem. I lined the airplane up with the runway centerline, let it descend gently to about head height, and when I pulled elevator to level it, NO response - I had NO elevator. In about 1/2 second the BC splattered flat on the runway and self destructed - there was absolutely no indication of an elevator problem prior to the crash. The only real damage was the airframe (all my hardward survived unscathed - thank goodness my gear was retracted and the BC hit pretty flat) but the engine got really hurt. The radio (TX, RX, flight pack, and 9411's) were sent to JR for a complete go through, and everything else was checked thoroughly. Horizon changed the servo gears on one 9411, found a broken antenna wire on the RX (we don't know if it was pre or post crash damage) and pronounced the radio to be perfect after repairs and a checkout. The battery was a 4 cell 1400 mah and was cycled regularly. It cycled just fine after the crash, but JR checked it out also. I'm still flying the radio and RX, and so far haven't had any glitches, but still am not comfortable with the final lockout I got while flying the BC - AND I STILL don't know why it was so slow to respond to elevator commands sometimes. Sure makes me nervous about building and flying another jet (but I'm still working on another one anyway)!!

Hope someone else might shed some light on this issue.

Wish me luck.

Regards, Les