I thought Dynatech was supposed to be the go to?
Sorry to hear about the frustrations.
It seems to me that there was a run of Dynatechs where something changed. I might have read it on Team Camaro? If you still have the boxes I would call with part numbers and lot numbers in hand and ask them what is up. I might have heard that Dynatech is now owned by Speedway, perhaps you will have some good luck. It seems you should be due for some right?
I would be chewing hard on Mosers' @$$. Stand firm, make them make it right at no cost to you.