At least my mount is up and running now, albeit with a loaner board.
To my dismay, why are you settling for a loaner board after spending $9K? Why aren't you demanding a new one with latest firmware, etc.? How do you know loaner is new or used or have the latest updates? You may be satisfied but are setting a wrong precedent in my opinion and hope you don't mind my saying.
My other dismay, Steve Bisque makes NO mention of what he is going to do for you? Is loaner board the end game?
All I mean to say is that if it were me I wouldn't be satisfied with a loaner board from a third party and would have asked for a new mount let alone a new board from the manufacturer. The remedy you describe and how Steve Bisque has framed his post (dodging the real solution to your problem) is bound to make prospective customers quite leery of SB [phone support is NOT the issue at hand, fixing broken mount in highest quality IS]. So far it has been nothing but beating around the bush kind of situation from all parties, the buyer, the retailer, and the manufacturer. Regards