Yeah, aftermarket parts are never 100%, but then again neither are factory parts either.

I am waiting for a local fab shop that has some 6" wide "I" beam drops 11' long to call me to pick them up. They are selling to me for scrap price so I can build a frame table.
Hopefully Monday, so I can get started.
I will do a build thread, hopefully I wont get laughed at to hard

Glad to hear you are having better coating experiences, as with everything else in life being armed with knowledge is power.
I am glad I could help

Josh