Hugh, sounds like you have a handle on it and have done everything possible. Agree with you and Bill. Send it back. It would be appreciated if you could follow up someday and tell us what was wrong. Your contribution will help us all. As you can see on DADS video, first link on post #1087300, that it should work on bench.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn