Hi Don,
I come here embarrassed to say that I have melted 3 of your McClickies attempting to direct drive an SST-90 in a Surefire 6P host. Bad idea, but it's experimental and sort of fun. My last run did reasonably well, as the switch continued to function for quite a while, but the plastic components were melting and current draw continues to drop as well. I was wondering if using Arctic Alumina Thermal Adhesive to create a thermal path from the spring to the brass retaining ring would be enough to prevent damage(warped spring, melted plastic) without deliberately lowering the current further. I believe I'm drawing around 6.5A of current.
--Herman