That sucks. Those guys have been pretty easy to get a hold of in the past too. I have some small PCBs to use on the various switches and I/O jacks somewhere - if anyone wants them I can find them. Also, if you have extra pieces from that fourth chassis, I would be interested if shipping is cheap. One other piece of advice - use a smaller washer on the toroid. This picture will give you a hint why: (yes, that piece of copper is not insulated)