Need a little help. When turning on the Summit it started to run / stop "hysterically". I disconnected one of the micro servos and it calmed down. Approx 10-15 runs later, it started to do this again. Any Idea what's causing it. Bad ESC, Reciever, servo? I have disconnected all the servos. At 5-10% of the time when I turn it on, it stays calm for short time and then starts running.