I too would contact Lichtsinn, they are pretty good at running parts down, especially if you have the original part #.
https://www.lichtsinn.com/
I dropped the part # into their online part finder and it came back no match. I had a similar instance and it was just due to Winnie having updated the part # from my build to now, Lichtsinn had no problem finding.
I’ve purchased from them many times, very helpful and reasonably priced. Given their location 1 mile from the factory if they don’t have it they can get it quick.
Good luck!