I did an oring mod just like with the FW switches. I searched every oring I could find. Ended up using one from the box of vape atomizer parts that I kept for some reason.
The o-ring I used is 9mm×7mm×0.9mm.
it’s not perfect, and I think it’d be better with a slightly thicker one, but the switch has improved. the feel isn’t much different, but it brought down the number of nonresponsize “clicks” down from about 50% to maybe 10%, by my estimate. when I pulled mine apart there was some dust and tiny shiny specs of what looked like the same color as the bronze PVD on the button.
didn’t really mess with the nubbin, and these Reylight things for his switches look just like a tiny copper sticker. it wouldn’t stay on the brass nubbin and I would’ve had to somehow trim it down I think.