Many 1000 have about 1mm of play, but the 600 doesn't normally have any play. I just checked my own 600 which I changed the bearing and bushes on 22000 miles back,and it has zero play. Any play in the 600 is an indication of wear. However 1mm of play at the wheel in not a lot as the distance from the bearing is over the 500mm exaggerating the play.