I'm having some problems with my Zone IV Developing Timer, the one with the temp unit and that changes with the temp shifts. It started getting a bit tweaky, nothing new every now and then it would need the wires jiggled, but this time I noticed one of the phone plugs was cracked, the one that goes to the temp unit. I've properly replaced the plug, but the wires had a layer of oxidization and I fear that the whole stretch might be corroded. Problem here is that the non-plug end ends Into the unit, and I can't figure out how to replace the cord. I've read that Calumet/ZoneIV does not repair these anymore, and although the Timer Unit is still good and works in normal time, I'm also thinking that I maybe could just figure out a replacement temp sender. If anybody has any electronics ideas for me to try I'd be very stoked. I've printed with this timer for 10+ years and out here when it gets hot it really helps keep the consistency of my prints. I've also considered designing a new one, I don't think it would be as hard considering the advances in chips and such.