I've been to Classic Air in Tampa many times over the years as I live across the Bay from Tampa in St. Pete.
Been buying their AC parts, including compressors, for years for my vintage Thunderbirds and Mach 1's. They supply NPD with their parts.
I watched the techs rebuild the compressors on site and fabricate parts as well.
Yet, despite the individual approach taken, I've found their AC parts regularly fail--especially in the leak category--like other manufacturers. I have no answer as to why.