Mr S- Please, tell me: How can a cartridge, with it's anti-skate out of adjustment, ruin a track with no grooves? Mr D- I've found the anti-skate track, on the Shure disc, to be very beneficial. It's saved me a lot of time, when setting up cartridge/tonearm/table combinations(my own and others', over the years). Of course; everything needs to be verified aurally(and further adjusted, perhaps), but- I've found the blank test track, a much more accurate tool than most manufacturers' calibrated anti-skate adjusters or VTF/weight estimates(ie: Those given for Magnepan's shot-in-the-bucket system).