Replacement heads for Technics RS1506US

I'm looking for replacement heads for a Technics RS1506US reel to reel. Technics no longer stocks them. Are there any out there that someone is willing to part with?
If you do a internet word search, there are a couple places that have hard to find or discontinued recording heads and other parts.
I feel your pain. I had an RS1500US. Great reel deck, and one of the few to have all three common speeds. I sold mine before parts became an issue. Once in a GREAT while I've seen these come up on ebay, and even more rarely, with a spare headstack. Good luck!