Is there a list of calipers that are supposed to have washers on and how many etc? I'm never sure if some of them are just bodges, or if they're by design...
As the orhers have said, it's pretty much Avid. The washers do play a role in getting the caliper and rotor lined up, so for as long as the washers are installed correctly it should work.
That said, given the choice I've always gone Shimano.
Is there a list of calipers that are supposed to have washers on and how many etc? I'm never sure if some of them are just bodges, or if they're by design...