Darrel, thanks for your time and effort.

I just took a 16F628A off a production boards getting ready to ship. It had a different date code than the ones in the 2 tubes I had just received for prototyping. It worked like a champ. No problems. I should have done it 2 days ago, but I hate to touch production units. I have a call into my supplier.

I'm sorry for wasting your time.

Thanks
cpatnoi