My friend was driving his tmaxx 3.3 today and it started handling funny New batterys didnt help. When going slow it turns just fine, but when speeds get faster it will suddenly vere left. nothing binding sitting still wheels turn fine, servos sound fine, throttle works fine. Iam guessing his having reciever problems? Any suggestions? thanks

is sub trim on radio ch1 adjusted accordingly? has truck had collision? could have striped splines on servo horn,bent shock shaft? also check that xtal seated in rx proper.