My secret with hole saws, is to drill the pilot hole first with a separate drill, and most important use REVERSE for the first few revolutions to drill the first 2 or 3mm depth with the hole saw
excellent advice which
does work; I would also second the use of masking tape over the dash.
I know it's a spanking new hole saw but I would also be inclined to do a test cut on some scrap and make sure the saw is true to size....
James
