That's kind of like Mercedes-Benz, and I don't own one, but if you have a Benz (no matter how old it is), and it needs a part?The cost of the kit is $47.50 + $8.50 shipping. I'm so thankful that they still make fuel pump rebuild kits for the Mite.
M-B will make it for you. I'm sure that's not cheap, but it's the principle: they will back you up. I like that spirit.
Maybe they have former M-B people on staff in "Mite" land.