Servos don't normally start twitching from low battery issues and not 2 different channels.

It could be RF at a certain throttle setting. I will give you an example.. few years back I had a 3W 50 that would get random glitches and I spent hours trying to find it.. replaced switches, batteries, servos.. tried everything. I could fly 3 flights and thing it would be gone and then it would randomly show up.

In the end I had metal on metal in my throttle linkage right around 1/4 throttle. Since I wasnt there very often it was hard to duplicate.


I am not saying for sure it's RF... but I cant say I have read or heard of batteries causing glitches of this nature in servos. I mean you hear about JR servos when a pack is at full charge twitching.. but thats all that comes to mind off the top of my head.