Originally Posted by
clubman
Some calipers lend themselves to lengthening the slots. I'm not recommending that at all but angles won't help.
I think we are saying the same thing. By adding a spacer you lengthen the distance between the fork and pads which also changes the angle that the pad hits the rim since the rim is curved. Unless what you mean by slot is the hole for the pads, which may be another option since the distance is so small.