The retaining clip? Those do create some pressure and the pads do have to over come that to retract a bit when the piston retracts as bit.

Some drag is normal based on the design. Warped rotors push the pads and piston back further than unwarped ones.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D