Bellingham, MA
You don't have to take the buttons out of the cabinet. Once the switch is out of the way, tap the button's stem with a plastic hammer, or use a wood block. The button will pop out of its plastic housing. Now you can clean out all the yuck from 10,000 peoples' fingers. If there's a tapered spring in there, just toss it. They don't do much except make it feel weird when they crunch under your fingers.
Sure new buttons are cheap, but if you want to fix it now, they pop apart, and pop back together, too.
Allan
