Hi Jez,
I suffered the same thing. I have the same servo, XTM saver etc. The plastic Losi steering mechanism is sloppy. I replaced with this below and all my issues disappeared. The only other thing I did was that I went back to the losi Mini T ball ends, I tried the 3 racing ones but they have way to much play.
http://www.end-of-line-rc.com/cars/o...-assembly.html
Hope this helps.
Paul
