So you can't remove the switch to clean inside the cap where the switch passes
through? If so, that's a critical area that needs to be cleaned periodically as it builds up gunk and corrosion and will limit performance as the connection degrades as this switch ground via two ways, friction between the switch and the cap where it passes
through and
through the spring. Also, for those who have the Schaf switch, I'd recommend using the spring version, the magnets eliminate the dual grounding feature.