I was working on a friend's Team Losi XXX-NT (Mach .15 engine) today and had a bit of an issue. I was tuning it up for him, and while working on the high speed needle doing high speed runs down the street I realized that the steering servo starts to twitch significantly at high speed. I hold the car in the air, and pull the throttle on the transmitter, the car revs up (sporadically) and the steering servo moves side to side quickly. Also when revving up the engine either by remote or manually the engine peaks in rpms and goes wild even with the throttle off at idle. All batteries were replaced by fresh cells. I think the engine revs could be related to tuning but the servo twitches? No clue.

XR2i radio if it matters.