Well, I was thinking. Maybe fill that countersink on the faceplate. Using the WOAD chassis would be easier. But then, doubt the faceplate and painted rack handles are going to be blemish free and match that beautiful chassis. The rack handles on my unit are standard anodized aluminium handles that are painted a slightly lighter shade of shiny olive drab than the face plate. I spent a lot of time mixing Testors enamel and fixing the worst of the scrapes, and it looks a lot better, but I think it goes better with the original chassis which is also painted a greenish charcoal.
To me the Pro just isn't as elegant as a Clair Bros or normal S2. It's got square cut faceplate corners and paint over the anodizing. But, it's rare and unique, so that's cool. Hope your faceplates and handles are in great shape, that'll help a bunch.
Oh, and the transformer bell has that unique Pro sticker. My bell was bent at the top from other amps being slid in on top. Cast aluminium that I was able to carefully work flat. Wood blocks cut to size were required.
