Hi all, I changed my front pads the weekend just gone, I am getting a knock every time I apply pressure to the pedal, even if it is ever so slight that you are not braking it still knock, it also knocks over sharp bumps, it never did this before replacing the pads, I have ate calipers, first time I have ever replaced pads and could not find a guide to do the ate calipers so I just had a go, the brakes work perfectly apart from the knocking, any advise? Thanks Peter