I’ve been shaving with a Feather Artisan SS for a while, and I get excellent shaves. But when I try with a real cutthroat (a Dovo 5/8”, honed professionally) nothing happens. I mean nothing; I don’t cut any hair at all. I don’t reduce growth volume even a little on a WTG pass. I don’t cut any hair at all on a XTG or a ATG pass. I’ve tried flattening my angle, increasing my angle, sharpening on a 4000/8000 grit stone, and even shaving my arm hair to be sure it’s actually cutting (and it is, as my now bare forearms will attest). What on Earth could be going on here? I’m stumped, and frustrated.