Do you know if someone has 3-d printed exhaust teesYou need to change lever to a G250V lever .141.
Exhaust T are NLA so you're looking for used, good luck, or 3rd party.
Blue diaphragm is also NLA you'll need someone who's willing to part with one.
Spring .216 or .218 you can but new, ditto balance chamber. S-wing poppet is cheaper to buy in a service kit G250/G260 or S600/G250 that as a seperate item, go figure.