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When the other shop put on the second set of rotors they said the first shop didn't properly clean the hubs. I think it was BS because the second pair went bad much faster than the first, after they supposedly cleaned it up. It is possible it is not sitting right still for some reason, and that may be the root cause. Unfortunately I don't have the work space or tools to properly test for run-out, let alone test the pistons as you describe.
Control arm bushings and thrust are probably close to shot across the board, but nothing clunks or bangs. I could see that causing some vibration in certain cases, but would it result in the uneven wear markings and high spots?
As far as the pads, I used the Carbons with stock rotors for years. And the rears are fine with the Zimmermans, even though the fronts had an issue. Maybe this set of pads is bad or wore in wrong?
I'll probably take it back to shop 2 next week, but they are giving me a run-around. Hopefully they decide to guarantee their work.
Thanks for the ideas.
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