Btw, if you can't find a way to plug the hole where the old needle is, you can just leave it there and just set it to as rich of a setting as you can get with out leaking air. Then use the new remote needle for your actual settings.

A lot of combat guys do this in SSC class to their Magnum engines, using an OS remote arrangement because the OS needles have a much finer adjustment than the stock Magnum needle, but the rules for SSC don't allow direct engine modification, but do allow non-stock fuel arragements like bladders and extra needle valves inline.