That switch is very low quality.
I ended up replacing mine. It was a pain in the ass to replace, but I've not had a single problem since.

I don't remember for sure, but I think I got it from Marco.

At first, I was going to try and replace it in place, but went ahead and took the ramp and track apart. It sounds like more work, but I figured I would most likely have to go down that path eventually and just bit the bullet right from the start. There's not a lot of wire length to work with.

Take your time. Take pictures. Do yourself a favor and Lay down a white towel or piece of fabric under the area to help catch the little bolts, nuts and backer plate that you're going to drop at least once each. You'll thank yourself.