Tim, you are clearly cursed...
FWIW, focus with a view cam on medium format is HYPER critical, more so than with 4x5 and larger formats, and more so with digital than film as the digital sensor has no depth and film does. The slightest mis-focus with your MF digital back and your image will be soft, period. If you are using a sliding back with Ground Glass (GG) to focus, I suggest at minimum a 10x loupe to confirm focus, and even then if you are off by even a fraction of a mm it will alter your PoF in the image by several meters.
As an example, a 210mm lens at f16 PoF will move from 10 meters to over 100 meters if you move the focusing stage 0.5mm! Obviously, the effect becomes more critical as you go shorter in lens focal, and the same 0.5mm focus error with a 35mm lens would take focus totally out of the image...
Best test is an image with lots of depth so you can see the point you focused on versus where you actually landed, and that assumes you actually landed somewhere in that range, which is NOT necessarily a foregone conclusion.
Best,