I admire the wealth of knowledge on this forum. I have no experience with W108, but all of my steering and suspension training at Ford and GM reflected that steering will pull to the side of least positive caster.
It will on a GM or Ford because they don't have a common sub frame, and because any movement of the caster will affect the toe and camber independently on each side. On a W108, W109 W110, W111, W112,and W113 the caster won't affect the toe UNLESS the caster is offset relative to each side. Even then the mis-adjustment wouldn't cause any noticeable pulling due to the minuscule amount of travel provided in the caster adjustment.
Rumb, I couldn't agree more regarding your previous commentary.
