I use no ox id special on my AYS, on the inside of the switch and the screw head and the top contact inside the tube, and all the threads. Zen doesn't recommend it, but honestly my AYS' switch oxidizes to the point of not firing with two hands in the span of 3 days use if I don't apply it. Something about my body chemistry I guess. I haven't noticed the same issues with the aluminum switch though which is great.
Disclaimer: Clean first with alcohol, apply very thin coating.. very easy to overdo it.
Disclaimer: Clean first with alcohol, apply very thin coating.. very easy to overdo it.