Wheel alignment, Whats the problem? Options

[DavidSweden]

I had the wheels aligned the technician told me that he was unable to adjust the camber and caster to the required specification.
The car has 911 struts and a five stud conversion, the front of the car shows no sign of crash damage or distortion.

Any ideas what the problem could be and what do I need to check?

[roblav1]

Ride height first (and rake). Your ride height might be a bit low in front. I was able to get right at 1 degree negative camber in front, which was my goal for street. Mark knows his stuff, and he likes 1.5. Close enough for a fun non daily driver. I also aim for maximum caster in front and got to 6.5. Again, Mark likes 7, but 6.5 is close enough. My experience in racing cars was that rake is the predominant factor in how a car handles, at least at the limit. Castor is more of a personal preference. So make sure your front ride height is set correctly, and weight balanced left to right (ARB disconnected). The last thing you want is the front control arm going past parallel with the road in full bounce.