took a low quality 7\16 bit and made it the same profile as the rivets pilot drilled with a 5\16 to the desired depth then used the rounded bit to make a bucking bar. rivet just sits proud. 2nd and 3rd attempt. factory dome on left and mine on the right. I cut my first attempt in half with a zip disc and after sanding to clean it up you couldn't tell where the parent metal started or stopped against the rivet. I drilled the hole 1\32 oversize and it filled the hole entirely.