Did someone mention that Dennis Zander has great customer support?
I sent him an email about this thread. I asked about voltage and lubrication. Five minutes later, I got this response.
Although 14VAC is recommended, you can use 16VAC on switches that need a little extra.
Graphite is very bad since it is conductive. A drop of light oil like used to lube engines placed
in the slot on top and manually worked back a forth a few times really helps.
Please feel free to post.