For wheels rubbing the shock balls.
I'm looking at two cars right now with the same thing. Parts on order.
KYOSHO P/N UM112
1. If your txmitter can do it, set the end travel limits or the steering
proportion so the wheels don't touch at full turn. (Move the suspension
full up and down when checking.)
Check the offset on the wheels. .... an unnamed buddy of mine put 30's
on the front a did a good number on his!