We are trying liquid electrical tape and coating the terminals of the smaller impedance switches. the issue is the mechanical construction and the terminals are too close to some of the metal body parts. Home Depot
https://www.gardnerbender.com/-/media/inriver/LTB-400_PKG_01.jpg?modified=20200110102322On a recent build, I
painted over the metal parts so there was not contact. I will try that and see if it becomes a standard recommendation or we paint them here. Trying to find a mid sized DPDT switch, just the next size large ones seem to be available. May need to change vendors.