Why not just use lead wool and melt it a bit with a torch if need be? I've done this a couple times and it works great.If you decide to pour a new joint ask around if anyone you know has an old joint runner that you could borrow. An old seasoned one works better than a brand new one. If you have to have to use a new one wipe it down with some cutting oil before you use it. In the meantime check eBay for used ones in good condition. Also ask for white oakum at the supply house. The white oakum packs much tighter and will swell and seal faster than the traditional hemp stuff. I also use a 4x3 no hub reducer to hold my ladle. This allows me to use one hand to hold my torch and scoop all the impurities out of the lead with an iron.