Thanks jonigel, it helped a lot...or didn't because I get roughly the same measurement, so the stub axle carrier shouldn't be at fault. My problem is that I have excessive toe out (20mm) and there is no margin for setting it correctly as the steering rack bushes are already screwed fully in. The complete front suspension and steering rack is correct for 7 deg. castor angle, which is important, and I'm puzzled of what could be wrong.
I will ask you for some more help, to make a rough measurement of the track arm length, center of the through bolt to center of ball joint pin. I bought them from Franzose to replace the later ones that had been fitted on the car. To me they look OK, they have the rake towards the front of the car , but they could be longer and upset the toe out. Any other help appreciated!