Logitech MX Ergo switch replacement

After using a Logitech M570 trackball for a while I switched to their MX Ergo model while the pandemic was going on. I've been pretty happy with it, but after around three or four years, it had now developed the "doubleclick issue". Apparently it's a common problem with these devices. In my case, the switch in the left mouse button started to register false clicks when holding it down. This caused drag-and-drop or selecting text to become pretty much impossible. To disassemble the device you can follow this great iFixit guide, but it's pretty easy and well constructed, so you'll find your way around. The most important part is unscrewing all the torx screws in the bottom, then sliding a prying tool under the right button, and unclip the two shells all the way around, until you arrive at the left button or they pop open. I was very surprised about the ridiculous amounts of cat hair that had built up. Even though the encoder slots in the mouse wheel were pretty much invisible, it didn't…