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...Runout is the amount the disk 'thins up' with use....
When servicing a rotor the stamped number on it usually is the minimum you can refinish the rotor to. Then there is the service limit which refers to the amount of material you have left after running the rotor, after you have turned it to the minimum number stamped into it. In other words there is a point when the rotor is deemed unsafe to use. Runout is not used to determine if the rotor has enough material to use it. Parallelism is the term used to see if there are thick or thin spots. Runout is used for the waviness. Checking the rotor entails dividing the surface into many pie slices with a marker and then checking for more than one problem. I am guessing that Rodekyll is on the right track with the MC leaking internally too. Mike
Did you check the disc runout after assembly with a dial test indicator?I agree EBC HH pads will be fine with SS discs if anything they will give a more even wear rate.
This may help clear things up a bit: http://www.stoptech.com/technical-support/technical-white-papers/-warped-brake-disc-and-other-myths