Checked when installed. There is no slack movement on the calipers, although if I use a bit of manual pressure I can move them slightly. But that's what I expect from single-sided sliding pin calipers with the master cylinder at rest position. All the ports are open so fluid can be pushed back to the reservoir. If they don't move a little the pins and/or pistons are seized. For years I did this test every month or so on a Honda m/c I used through the winter. Useless pin seal design meant the pins seized and needed to be stripped and regreased 2-3 times a year.