I have recently change the front and rear pads and front rotors
i now have what sounds like a pad slapping into place when i first pull the brake on it goes away after the inital brake application
I noticed when i had the calipers off that one of the pistons was slower to react when the brake lever was pulled than the other
the piston furthest from the brake pipe was the slower one
is this normal or could this be where the pad noise is coming from.