I have the Paragon, not the Professional. I, too, ordered my table with the 4.75" corners.Since my Gold Crown IV plays tough and has 4.5 corner and 4.75 sides I decided to go with the slightly larger pockets on the Diamond. It will have 4.75 corners and 5.25 sides.
4-6 months. Will be a long wait. Maybe I will luck out and have an early delivery.
When they were actually building the table, I received a call asking if I was SURE I wanted 4.75" corners. They rarely get an order for a Paragon like that, and they wanted to confirm before building the rails. I appreciate that sort of service. I confirmed that's what I wanted.
I've posted this picture before, but in case you missed it, you can see the 4.75" at the points and about 4.5" toward the back of the shelf.