Just installed my 4 Pot AP Racing kit ( 330mm discs ) and my steel braided hoses in front. At the back, i only have my standard 2.0lpt brakes with rubber hoses. Was testing out the brakes and realized that at braking over 60mph, there was slight jittering / vibration on the steering wheel and brake padel ( if my legs arent hallucinating! ) Just wondering if that is normal in high performance brake setups or is my brake set faulty? Or is it a simple case of braking imbalance between front and rear? Thanks mates!