Need some advice from my RCM friends again

[BrianG]

I would say wait as well. Sounds fishy and I would err on the side of caution given the circumstances. Like was said, he agreed to a deal but didn't fulfill his side fully, so now he suffers the penalty of waiting. If he complains, tell him you'll gladly ship it back unopened when (or if) it arrives, providing he pays for the return shipping of course.

And even if you DO get the item, I would hook it up to make sure it works before you send your working unit to him. If it doesn't you can ship it back to him; you'd be out the shipping cost, but not the cost of a full MMM...