There were some issues with the prototype boards, so I had to try a couple more times over the last couple of weeks to correct them. That wouldn't be so bad, even with the time delays, but the extra-fine leads on this board cost an extra $50-60 (over the normal $5).

But the customer service rep and I are now pretty sure that it's working, at least as far as the physical board goes. I just hope the electronics work right this time.