[Tyson Schmidt]

If you are autocrossing this car, why would you want more "positive" camber? Track and autocross guys all complain about not getting enough "negative" camber.

If you drive your car hard at the track and autocross, and have the alignment settings set up to complement one another, tire wear won't be a big issue. I have -2.5 degrees of camber up front and -3.0 in the rear of my '72 for autocross, and my Victoracers are worn evenly straight across the tread. (And they are nearly worn out after 1.5 seasons)

The issue the alignment shop is having with your car is likely rust. The adjusters are probably all frozen. These cars are tricky to align, but if you know some tricks, you can get all the adjustment you want.

Most alignment shops do not know the "racer's" tricks. They simply know how to get the numbers on the screen to turn green. Find a shop that knows Porsches specifically, or at least one that does race prep. You'll likely have to pay extra for them to disassemble the rear trailing arm bolts and eccentrics to free them up, and the tie-rods up front will likely require replacement or heroic doses of penetrant and flame to free them.

As for the front camber, many alignment guys don't realize that they need to chisel out the tar that the factory put on the upper strut mount in order to adjust it all the way. You have to get all of it out or it will hinder the movement. Another reason to find a more comprehensive alignment shop.