Yes D, I think so about the misperception when reading...
Have you tried putting the rear lower pin in its high position (= higher roll center)? what did you feel on the rear? I definetely felt it is more planted to the ground which is should not according to the setup book (which should be less grip)..
Also, sory D, I did not agree with this one.. longer amrs does not makes less or more of camber change.. the angle does
Another opinion as I remember to brough up now, shimming the upper deck by 0.9mm (just to make it as high as the one on front bullkhead) would have been really important to keep the chassis from unwanted tweak. The middle braket does not design to hold the upper deck for having angle. So when you force to screw angled upper deck, you will have tweak somewhere.. may not be on the 4mm chassis as the 2mm upper deck is more flexible as well as the plastic middle bracket...