These cup washers look like a great solution, up until now I have made my own (a fiddly task). I have ordered some and will await their arrival. I hope they fit the BMW retaining pin and spring kit. Thanks SlowTech. I know getting the parking brake shoes set correctly is important for everyday use, AND there also has to be a set amount of handbrake performance and an even balance across the rear brakes shoes to pass the MOT.