It's a little hard to see on the lighter-toned print, but more obvious on the other. It's not really all that bad, but I'm sure you are looking for better results. I can't really see the back on your pictures of he camera so don't know what to say. A bail back would probably fix things, but it's a radical design shift for your beautiful camera. Tighter elastics? Black felt on rails? As I said, it's not too bad, Bill.

Cheers,
Tom