I have a wildstick-40 that I had problems with mounting the needle valve assembly using an OS 50 SF. The needle valve assembly was attached to the rear engine plate and everything was so tight that it was impossible to mount the engine correctly with the mount I was using (Sullivan flex mount). So, I mounted the needle valve assembly to the fuselage and simply ran the tube from the needle valve to the carb. It looks somewhat dumb, but it works. Done deal.

Meaning, there is always a way to do something with those remote needle valve assemblies.

CGr.