I purchased a set of porterfield front brake pads for less dust and i have had major squelling noise since i put them on. It got to the point where peopl down the street could hear it, it was ridiculously loud. I went back to porterfield and exchanged for another set of pads, and same thing happens. I was told to change the rotors because the aftermarket pads may be too "rough" on the stock rotors. Any insight or help would be appreciated. Thanks.