"Take the wheel off, set it straight, tighten nut." That will work provided the amount of off center is equal to one (or more) spline's worth of rotation--often it is not. The car in question should be taken in by the original shop, have the wheel at center (maybe the shop is unaware the the Volvo wheel can be rotated on the shaft) and with the "rack" itself centered and then the tie rods equalized. It's as easy as pie and the original shop should accomodate you. When I worked at Honda (way back) they stressed a survey---a happy experience at a shop will result in a couple of recommendations--an unhappy experience will be shared with a dozen others. -- Dave