On Friday, October 18, 2019 at 3:04:43 PM UTC-4, Jon Elson wrote:
On Sat, 12 Oct 2019 17:57:51 -0700, MouseUser wrote:

My favorite mouse is acting up.
Buttons double-click on a single-click and sometimes do not click at
all.


try a 0.1uF across the switch contacts

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