Ask HN: Fix for crappy Logitech mice?

I love the Logitech "Anywhere MX" mouse except for the shoddy quality. I go through about one of these mice a year and judging from the Logitech forums this has been a design problem since day 1 that they have no intention of fixing (button stops working reliably). Has anyone hacked/"modded" one to fix the button problem? Just replacing the button with another cheap one is not cost effective. I'd like to fix it once and be done with it. My time is expensive enough that going through the warranty hassle is not cost effective.