Well Folks,
The Pix Aero people have contacted me again with good news
This is what they wrote me with a bit of correction for the auto-translate mistakes:
"We will include in all new lenses an elongated lens holder. If something is wrong, let us know and we will mail the missing parts for free."
So there you have it folks. Pix Aero will be including the longer base in all new orders. I would suggest, for the time being, that should you order one on eBay, you send them a little message reminding them to include the longer mount. Just in case. While you are at it ask them to undervalue the contents and save yourself some import duty.