Direct and to the point, no offense taken, that's why I post here
The coilover being the same set even before the problem doesn't change my thoughts I guess.
"Old chassis problems" is exactly what I was thinking, I was using my 99% stock grandpa car of an example of how stuff can be out of line and hard to adjust even on a car that has never had significant stress in its life.
MrMigs' thread about his 430k+ chassis really makes me wonder if your front frame rails or subframe have a stress fracture in some non-obvious spot that just happened to let go when you installed the lcas.