Thermoquad primary shaft leak

I found a leak in my primary shaft a while back on my thermoquad its got quite a but of play in it but I been running it anyway. I haven't ran the car much since its got cold but the other day I started it and noticed I have have a really bad vacuum leak I couldn't pin it down exactly where it is at but when I wiggle the wobbly shaft it goes away is it possible to have a vacuum leak around the shaft? Its leaking fuel so I know the bushings are bad but would i be leaking vacuum too? Thanks