You may want to try a red/orange color anti-squeek silicon compound from your local autopart store. I don't remember the brandname, but you spread it on the back of your pads and the shims like hot butter on bread. Remember to let it dry/cure for an hour or two before reinstalling the pads. You only need a thin layer of the silicon compound to do the trick. I have aftermarket pads (EBC-Greens) and they don't squeek at all!