Mine stops the rotor nice and slowly taking 30-60 seconds while I unbuckle the seat belt and turn off everything electrical/gps. All it is required to do is keep it stopped in a stiff breeze when parked. The cable itself has quite of bit of stretch in it, and without replacing it, you will never make it perfect. But it just needs to slow it down, and keep it stopped, no more. 15 years of flying, and I am still on my first set of pads. The new extra pair, still in the parts bin in the hanger.
Scott Heger, Laguna Niguel,CaN86SH