Jim,

There are lots of different needle valve assemblies available, and since you are having the venturi made anyway, you could have it turned and drilled for something that is available.

I don't particularly like the ST collet type needle locking system, which takes two hands, and sometimes a third to adjust and lock!

Mecoa has several needle assemblies available, and I've seen many others from our forum vendors. OS still sells them for some small engines, and Enya would be another source, as they still make small engines.

I wouldn't rule out Fox either, as they have excellent parts service.

Now, when you find a suitable needle assembly please buy extras, and have a couple extra venturis made for me. I'll buy both from you if you like, or tell us where you get them!

Bill