Good morning everyone..like the title says..i have an 02 gsxr 750..this just started..if I roll the wheel there is a clicking noise that I believe is the pads either moving sideways and tapping the rotor and piston or up and down maybe inside the caliper or topping out against the retaining pin. It's very slight but light taps add up.. Is this normal ? My 600 same year does it too... The retainers that mount on top of the calipers are on the 750 and the 600 has them removed. Both bikes now make the noise... It's brakes and front wheel so concern is a bit high.