Rick, would you happen to have a part number or other identifying information for those springs from Southco? It would be impossible to overstate to you the amount of time and trouble I have gone through to find replacements for mine. I like your idea of piano wire, but I'm not sure I'm talented enough to make that work. Would you believe I use modified clothespin springs? I know, I know . . . .I was unable to find a source for them, but had good luck cold-forming them from piano wire from ACE hardware. Use a size larger than you think you will need, do one turn around a dowel in a vice and bingo... done. Good luck! You can get the cabinet latches from Southco. They don't do retail, but you can e-mail or call them to get a supplier's name and they can handle it. I got a couple of dozen. I also ordered them a bit stronger than stock for more security. http://www.southco.com/class/c3-grabber-catch-latches-7399.html