i have an s3003 on the throttle.... if you adjust your end points wrong that will load up the servo and end up making it shit itself. i dunno if i do it right but i put the steering on full lock and turn the end point up until it doesnt move the steering any more and then back it off so its not trying to move something that cant be moved any further..... i hope my throttle servo doesnt shit itself cause then my car might go out of control :O