Any tip how to remove the inner alloy 4 mm hex flat dust cap on the ATE rear callipers fitted on the 308/208 ? My hex just spins as the previous person seems to have rounded the internal 4 mm hex profile so the tool effectively spins . I’ve tried to find a image of the cap but can’t . It’s got some chisel marks , presume because it’s soft alloy it can be encouraged to turn with a sharp chisel and hammer . What’s it look like when it’s out ? Can a exact threaded alternative bolt be replaced suitable length to make it easy in the future . All I have done so far is examine it and spray it with WD 40 while awaiting the pads . Did think dremilling a slot it so a flat screw driver can gain leverage . How does a everybody else cope taking this cap / dust cover off . Outer one is easy a plastic 13 mm bolt . It’s the inner that looks a pig to shift . Any ideas please .