the grinder works well, but the grinding discs with the tool and additional discs ordered have no grit on the discs. Some of them do, but they're few and far between. The grit does not correspond to the normal use of the bowl. Where is 320? and the higher levels are almost never used. Can you only order 80, 120, 220, 320, 400, 500, 600 grit rims somewhere?