PST tubular UCA too long??

Hey guys,

I just installed tubular UCAs from PST and I struggle to set the camber.
I just wanted to pre set it so I can drive the car to the alignment shop later.
I have boxed stock LCA, adjustable strut rods, 1.03 torsion bars, stock disc brake system, car is 1974 Scamp.

First I set the front adjusting bolt as far outwards (away from the engine) as possible, then I thought I can adjust the rear adjusting bolt so far in that I get at least zero camber.

But I had to set the rear adjusting bolt fully inwards and still had positive camber, then started to set the front adjusting bolt more inwards. Now both adjusters are fully inwards and I still have positive camber. Not even thinking of 1° negative camber what I would like to have.

What am I doing wrong? Or did anybody else have problems setting the camber with PST arms?

Thank you!