I basically follow the same procedure as in the Zowada article posted above. I thought I showed you how to do that, or was it that I showed Troy? Either way, when you booger up the slot and get it too wide, if you're using brass, you can use your ball peen and push the slot back narrower, then just clean up the face. I've tried soldering a couple with zero success, but have had good luck with epoxy.