Just got some Salmon Kool-Stops for the winter. They have this scimitar-like curve on the surface, causing the back of the pad to strike the rim *way* before the front. I think this is the "squeegee" feature, designed to wipe dirt and water away from the rim. But it also seems to run counter to what I know about toe-ing brake pads, where the front of the pad is supposed to strike first. What's the deal?