[Mike Pearson]

I guess its possible but I would be looking at other things first. Check to see if the rear is square in the car. would be the first thing I would check. While you are under there you can loosen the bottom of the shocks and run them through the stroke to see if they feel like anything is going on with them. Check the adjustment on the bars to see if they are neutral. I would also give Caltracks a call to see what they have to say.