Originally Posted by
antmaster5000
... , but it feels like I'll get the pads in a good position, and then the act of actually tightening the screw will move the pads out of position. It's almost like I need to position them so I know that they will move and hope that they move into an optimal spot for breaking (if that makes any sense).
....
That is the case with all rim brakes, not just canti brakes. It takes a little care to do it right. Exception, a few rim brakes use a threadless post type mount, but I have more trouble with them. Not less.