ETZ / TS 250 gearbox parts

I need gear selector forks and shaft for an ETZ250. I think the TS 250, ETZ 251 and 301 all use the same parts. Might buy a whole engine for parts if it is reasonably cheap and somewhere near Lincoln.
A community for owners and riders or MZ Motorcycles, Scooters, and ATVs.
https://www.mzriders.com/