So I've replaced the brake pads on four of my vintage rides with the Kool Stop Continental pads. They stop great but the front brakes (only the fronts) squeal like I've never heard. I've cleaned the rims and sanded down the pads to no avail. It seems like I need to get them toed-in properly to eliminate this, but there's really no way to do the adjustment short of bending the calipers, which I've been warned against. Any ideas? Or just scrap the pads and go back to the old-fashioned DiaCompe gray pads, which for some reason don't seem as prone to squealing? Thanks.