VPI 2nd pivot point set up question

So I ordered the VPI second pivot point and I was reading up on how to set it up.  However I do have a question when you set the pressure of the point on the little pad you are setting it to a specific record of a specific thickness and this will affect your final azmuth as I understand it.  So let’s say you set it to a thicker 180 g record and then change to a thinner record will not the pressure point on the pad now be set to a lighter (or higher?) pressure and now won’t the azimuth be off?