Have you spoke to Bruce ?
FOR PRO OWNERS - HAVE A LOOK AT YOUR MACHINE
On the first 6 or so machines that came out to Australia, I am sure they had the 3 x inserts in the playfield where the Angus face is. These appear to have been dropped altogether on later production models of the PRO . I have included a few photos of a machine that does have the inserts and the lights behind the inserts.(below)
My machine doesnt have those inserts or the wiring or lights for the Angus face inserts, but I would like to hear from other PRO owners and see if your machine has it or not. (click on the 3rd photo for it to enlarge to double the size etc).