I would not try the tape untill you fix the float. Gas that appears to be leaking from the bottom of the jet is usually leaking from somewhere else. I have had alot of leaky gurtners, and I always suspected that jet, but it was always leaking from somewhere else Is the paper gasket (figure 8 shaped)still intact?
you can reshape the needle with some fine sandpaper. POINTY SIDE UP
Do not use a flat head screw driver to tighten the jet, I have broke jets this way, use a socket.