Did you check your hinge pins? A bent pin in the rear should be somewhat easy to spot as your toe in will be different from left to right. On the other hand, a bent pin in the front of the car is not see easy as you can easily mask it by turning your turnbuckles in either direction. Other than that I'm not sure. You may want to carry it in to the LHS just to have another set of eyes on it. At least that way you know they have time to REALLY look at it, versus someone who's at the track.
PS. A pic might even be usful. If you have one looking straight down at that car and then a couple from a few different angles, one of the guys here may be able to spot something.
Another thing. What does the wear on your tires look like? This could be a good clue as to where the problem is.
Originally Posted by aus jd 2703
ok guys im running a front diff
im running a 540 motor or the kit tamiya motors so not much power the local pro (heavy) said my diffs were about right and i dunno the servo seemed to centre perfect and its a fairly new sanwa erg-wrx digital so not a cheap crap servo. im running outta idea's