I thought this might be interesting for you all. I've been having a horrible time with glitching starting about 3 weeks ago. The heli just starts poping up and down when in a stable hover and then of course beats itself into a pulp after I set it down and before I can unplug the battery. Even using my throttle kill on my TX the blades will still spin up to full throttle. I've had the blades strike my wrists on several occasions and one time bent a spindle and also took out some other parts of the head.

So I set out to find a way to fix this. The first thing I did was replace both motors. This did not fix the problem. Then I started unplugging servos one at a time but even with all 3 unplugged I could still get the glitching. Then with the motors unplugged but with the servos plugged in I could see the glitching. So the next step was to take the 4-in-1 apart and replace the receiver portion with a GWS R6NII receiver. I managed to do this in about 15 minutes. I mounted the receiver above what was left of the 4-in-1 but the glitching remained. So I just let the receiver sit off front of the heli just being held on by the wires and low and behold there was not a glitch in sight for a 10 minutes hover test. I've not seen that in weeks.

So I decided that I need to get the receiver away from the 4-in-1. So I took some scrap balsa wood and cut it to the size that would fit behind the battery. I then CA'd the balsa onto the CF spars and then double sided taped the RX right underneath the main gear. Connected everything up and I've now hovered 2 packs down without a major glitch during flight. I still get some minor servo twitching when I set the TX down and go to unplug the pack but other than that the really bad twitching is gone.

I'm not at the point where I would say this completely fixed my problems with glitching but its looking promising. I've got my third pack on the charger and I'll be trying it out again soon...