I ran these same tests on a couple of different units today, including one from which I believe is from the identical batch to yours (I'd be happy to confirm this for you on Monday).

Maybe I missed something, but where do you see other users having this same issue? I have not seen this confirmed anywhere. (If I recall corecctly the pboulang thread you refer to had some different variables that accounted for his findings). Of course, I wish to continue looking at this further with you. Please contact me directly at information@outlawaudio.com.