The man wants MORE caster. How about this idea?

I had to read that a few times. And just read again.

I'm not super clear if there were changes made without tested road time in between them. But it sounded like he ran 11.75 rotor w/calipers mounted in rear with 235/60/15 tires for 10 years.

These deals can be tough to follow.

The odd thing is, you should/can be able to swap spindle side to side without disturbing the UCA alignment cams and not remove the strut rods.

Same. It also sounded to me like he had been running the 235's with the 73+ spindles for a long time without issue, and the issues came up when the spindles that had already been on the car for a long time were swapped side for side.

The sway bar was changed as well if I'm following correctly, maybe the change in the sway bar also pulled the LCA's a little bit forward? The end links are bushed so I wouldn't think much would change, but maybe the pull from the new bar took up some slack in the bushings and cheated the LCA's a little farther forward?