Hi all! I recently inherited my great-grandpa's Zuckermann Z-box, built from a kit in 1964. Two of the jacks have their tongues(not sure, the plastic bit that plucks the strings) broken off and I'm trying to find replacement parts. The Zuckermann website does sell conversion kits to new jack types, but I am not interested in spending the ~$400 on that plus all the labor spent on it when it's currently working perfectly except for the jacks for the lowest and highest keys being broken.

Unfortunately the website does not offer these original jacks for sale and I cannot find any online. Does anyone here have a lead on where to find them and/or spare jacks? I'm located near Chicago.

Thanks!!

A while ago I posted that I was having trouble tuning the high d because it would always rip. The string in question is an iron 0.23 gauge on the 8’ register. Every time I got close to the tuning, it would rip. Nothing I tried worked, including the back and forth technique, or going extremely slow.

After trying 3 different string providers, my builder brought me an acoustic guitar steel string of the same gauge. Voila: no more ripping! It sounds identical to the iron string.