Base Alignment best Practice

[[Ja...]]

I have a customer who inspected a 1st article we sent to them and rejected it for the TP being out of spec and the bolt circle diameter being out of spec. On a call with the customer they conveyed that they used Cylinder for the rotation in their base alignment.
The true position is .004 to Datum -A- which is the OD

I used a 4 point circle and then created a 3d line for my rotation in my base alignment.

My results and their results are drastically different.

Which way is the best way to achieve the best results?

Thanks