Surely removing that spacer is going to try and force the upper wishbone rearwards (Which really only goes up and down), and the dog leg forwards? If you have difficulty in removing the spacer, doesn't that show you are loading the suspension up, and probably not in a good way? From what I can remember when I rebuilt mine, removing that spacer would twist it a little? Wont this affect the caster angle also?
Interestingly, why would you want to eliminate rear camber completely? Good for grip in a straight line but not for going round corners, reduce it yes if you have lowered your car, but you seem to imply you have 0 camber now?
Finally, I think the upper wishbones are different between earlier Twinsparks and everything else. When fitted to mine camber was huge (V6) so if you are saying removing the spacer reduces camber that kind of ties up with what I found when fitting old wishbones to a V6 with a spacer. Still couldn't spot any obvious differences between them though, however they may be slightly offset.
Last edited by benje; 10-03-11 at 19:40.