I'm not too worried about the tube, I rarely have to choke my bike to start it, even on cold mornings, as long as when the choke is off and it doesnt leak I'ld be fine with that. I'll try the brass tube and solder though, should I do this with a torch or an electric soldering iron (I need an excuse to buy a new one)? The only thing I'm worried about is I would have to use a smaller tube, as it is litterally broken off at the carb body.
As far as carb rebuild kits, if you have em, I'll paypal you tonight/tomorrow.