When I said "blacksmithing" I meant beating on the spigot with a hammer. Probably want to have the appropriate sized tube around to check sizes. I do this all the time when I bend the stay sockets out for s-bend stays. Some people do this shaping when it's on the tube, but I always figured I would hit the tube or the lug itself might deform the tube. I often use blocks of wood or a dowel to get the blows exactly where I want them.
I don't know if you have built a frame. I find repairs to be much less satisfying than building, and it's a bit more difficult. The results never come out as good as I would like. I guess it's nice to bring something back from uselessness. But tandems make good cargo bikes.