My Traxxas T-Maxx has been having trouble lately with steering. When I turn my controller left- the wheels turn left (all the way) fine, but when i turn right on my controller- the wheels sometimes turn right. It usually twitches right to left a couple times and end up facing the opposite direction that I am controlling. The servo isn't making any extra noise that would indicate a problem. If I adjust the trim on my controller the wheel will turn all the way in each direction without a problem. I have no way of testing to see if it is my transmitter, or the receiver for that matter. Any ideas?