E-Coat on new fenders

I've bought and used over 35k in Amd sheet metal in the last three years.... I have sanded it and the ecoating rolls off of it in most cases.

Secondly, the texture of ecoating is rough, porus and has many imperfections, which means you'll need to sand it to remove all of the imperfections. Sand it, and watch how much is left. Ever check it with a mil gauge?
Thanks for the input. That’s kind of what I been waiting to hear from the AMD users, but yet to hear people comment on it. Hearing this would keep me stripping the e coat off. Thanks for your input.