After I did a disc swap, the alignment shop refused to install one piece strut rod bushings and instead used upgrade 2 piece units. They also refused to align it unless they did the lca bushes as well. I was a young trusting guy
I'm guessing the strut bushes didn't seat correctly on the passenger side and slipped the first time I hit the brakes hard. Bang! What the hell was that?
It's taken me 20 years to pull that one nut off to see.
Things I tried to fix the wander: rebuild steering box, rebuild coupler, upgrade lower column to ball bearing, replace uca bushings, play with alignment..
Only discovered because I decided to do the lca bushings.