Had my brakes and rotors replaced last summer and they still squeak when i push the brake pedal in. the squeak happens for a second and goes away even if i push the pedal in harder. I went back to midas, where i got them done and they said its normal. they said outside air Temperature change, rain and heat if there used alot makes them squeak. they even put an aerosol on the rotors to i guess fill in cracks or something. Is this normal for new brakes and rotors almost a new year after installation???