Epix 2 Pro Buttons Sticking Really Bad

I took my brand new Epix 2 Pro 51mm Sapphire watch on its first proper backpacking trip this weekend.  It worked great besides a crash (posted in another thread) and the 3 buttons on the left side of the watch (I wear the watch on my left arm) starting to stick.  These buttons get so stuck that they're practically flush with the watch's housing.  I didn't get that dirty at all but I did sweat a lot so I'm not sure if the salts in my sweat got in between the button and housing causing some kind of corrosion or extra resistance.  Does anyone know how to resolve this? 

It's ind of ridiculous to have these buttons sticking so bad on a $1000 watch that I have only had for a little over a month.