So I decided to try a call again just now after 2 weeks ago when I got a busy signal, and Don answered this time. He said he's been really busy and didn't realize he'd had my camera since Nov 27th. I said I understood and he said he'd go ahead and work on it now. Told him I appreciated the work he's done for me in the past and that it's been really great. He thanked me for that.
Looking forward to hopefully getting the M7 back in the next few weeks or sooner!