Sourcing Schumacher CAT XLS re-re aluminum hop ups in USA

[Champ85]

I'm trying to buy U7292, U7293, U7294 for the CAT XLS re-release but A-Main hobbies doesn't seem to stock those parts for some reason.  They have all the other hop-ups, just not those three.  I sent them a message asking if they will ever stock them.

Is there any other USA-based source that has these for sale?

Having a hard time finding them, even from UK sellers.  Nobody, even Schumacher themselves, has U7293 in stock.

Where would you buy them from?

[Champ85]

I contacted AMain support and they said they are working to stock these 3 parts in the near future.