Closing out this one! In the past week, I got a refund for the non-working back (even though I was a little past the guy's fine print defined return period). And KEH swapped the back with the goopy seals for one that looks like it just came out of the Bronica factory. Life is good. I even ran some 125PX through it yesterday.
Now to get the darkroom (and yours truly) up to speed.