I seem to have developed some glitching issues with my electric planes on my 9C. I also bought one a few years ago and it has been problem-free all this time. I have a DPM Ultimate that has performed flawlessly until I converted it to electric, and now it glitches horribly. All of my electric planes, except for one, has developed glitching issues. I've troubleshot the heck out of this one, and the last thing to do is to put an e-plane on my 6XA and see if the problems remain. If not, it has to be the 9C and I'll have to send it off for repair. If the problems remain, then I give up!