I'm ready to kick MSI's ass. Why on earth is my M.2 slot on my B350 mobo using M1.7 screws/standoffs? Gotta be the stupidest thing I've ever seen! Lost the original M1.7 screw so ended up going through my whole screws bin (thankfully I have some 1.7s) but then had the issue their M1.7 screw not being "standard" (wider heads so it actually contacts the SSD) so the heads on the screws I had weren't wide enough to hold down the SSD . Ended up just cutting a little cardboard to use as a spacer...(don't have any M1.7 spacers on hand...for ovbious reasons). 

On the brightside, with it now properly mounted, my SSD runs 5 to 10C cooler!