I am not too familiar with kevlar pads but know people who use them and I have never heard of any squealing. One thing you can do is apply brake pad grease to the back side of the pad, not the friction side. You can buy this in packets at any parts store. Do they squeal all the time? I have ceramic pads and they have squealed ocationally if there is any rust on the rotors. I get squealing sometimes when I back out of the driveway after washing my car.