funny you say that he did the entire wheel not just the face and on the inside of the rim ( hub side) there was a bit of a lump of powder i geuss that had been baked on and couldnt get it off with my fingernail so stabbed at it with a screwdriver and can honestly say took quite some getting off. there are also no marks from levers where i have had the tyres put back on. so geuss pretty hard