Check the idler arm (right tie-rod hooks to it) for play, tie-rod ends and ball-joints, upper strut mount rubber, and the control-arm bushings. Could be any of them.

I had a similar problem on my '87 after an alignment, the shop forgot to tighten one of the eccentrics/bolts on a lower control arm and it was shifting.

You can also do a crude alignment check by looking for sawtooth wear across the front tires, ... line one front tire up so that sighting across it it lines up perfectly with the rear tire outside surface and see if the one on the other side is close (should be barely outside of lining up with the rear on the other side). This will tell you if it's way off, which it sounds like it might be. Also, if the car is sitting high in the front when you park or the outside tire edges are wearing, it is excessively toed-in, / if low in the front when parking (or high when backing up) or wear on the inside edge of both front tires, it is severly toed-out.

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- Jeff