Hey Tony, welcome to the site & posting, great to see you finally on the post count.
As for the used compressors, I would contact some Air Compressor companies to see what they do with their used ones. I would also suggest checking out Craigslist, a lot of times, you can find items on there that are hard to come by.
Look forward to seeing you post more and hope to meet you soon out at some of our great events.
WELCOME!!
Mike