I remember  watching another of James's EXCELLENT video's.

Forgot the name of it. I believe I will find the answer to my question: how to  find the workbook in the drivers seat for being able to have my section dims reflect starting at the "Wall Thickness".

Right now I have it hard coded in to be 6". It needs to be parametric and move on varying wall thickness.

I.E. if I  change the 6" to 4" my dim start point is 2" off the wall.