I've never ran them but what are you using them on? how much stress are you putting on them? do you have end point adjustments on your radio or a servo strecher?
i was using them for steering and throttle. i put a 9100 in for steering. and another 650 for throttle. yes i do have end poing adjustments... what is a servo stretcher??? i have it all set up but they keep going out. like not all the way if i push on them they will work for a min they once they go to neutral they stick again.....