Looks like I have found the issue.
Went back and shot several of the images at 1 and 2 stops brighter. That turns the muddy darker gray border to a light gray.
That photographed edge now has a RGB value of 224/202/208.
Took the image into Photoshop, new adjustment layer, selective color. Selected white and took the black from 0 to -100.
The numbers are now 242/227/231 which pretty much matches the actual edge color.
Except now the overall exposure of the image is pretty over exposed so back in and adjust a little and it prints a real soft nice realistic looking edge now.
25 more to go. Now the fun will be getting all those edges pretty close to the same color which shouldn't be that difficult.
I guess I should have know earlier it was a studio issue and not software/printing.
Not a professional studio guy, just do some for friends in the local art network.
Pushing that 70 number pretty hard and still learning, a good thing.
Thanks to all that responded.