Years ago I had a similar issue with a brass tubing and managed to replace the “carb side” to adapt to a fuel hose.
I used a automotive brake line and threaded fitting which fit perfectly in the carb threads .
I simply cut the brake line then reverse the short…. cut end…. and reflanged it on the carb side … added some jb weld and voilà hose nipple
except I don’t remember what I did on the tank valve… 🙁 🙁 but it worked. a rubber hose instead of a brass tube …. which you can cut and install a filter
automovie brake lines and end fittingss come with diff. sizes thread wise so if you choose that option pick the proper thread size
Joining AOMCI has priviledges 🙂