I'm not sure I understand how such a "remote needle" would work. I can picture the idea of a long L shaped extension that one moves up and down to "remotely" turn the needle valve -- a sort of long lever. Is this what you mean?
Nope! A remote needle valve is just another needle valve in the fuel line in series with the original needle. Some of the OS engines use a remote needle valve mounted on the backplate away from the prop. OS just plugs off the hole on the carb where the needle would normally go. What you can do is simply open the original needle, say, 10 turns so there's lots of flow & tune the engine with the remote needle back down the line.
Don't buy the Fox remote needle, I tried 3 & gave up, none would work, just garbage. Tower has a few brands listed. - John.