My 8 51mm has all buttons working perfectly. But at least two of them if pressed at an special angle has som "scraping" inside of them when pressed. But they works. If I press them in another angle they're perfect. Wonder if this is something that would break-in? I though new buttons on the new 8 was a end of a era with bad buttons (I always got bad buttons on the fenix). But no. One of them with I use the most, the bottom left are having some more scraping than the others.
Have tried soap water, WD40, baby oil, and more. But nope. No change. Seems to be better while resting for a while.. but when repeatedly pressing they "dryes" and starts to behave badder.
However, it's minor. But irritating that it NEVER will sort out on Garmins the button problems.