370Z replacement...suggestions?

ImportConvert

Maybe you're less picky, or maybe my car has a bad rotor. The right front they just cleaned up a tad, but the left front had to be turned TWICE before it was true. This time around, I'm going to ask for a replacement. It's only been 7K miles since the last time this was an issue.

They properly bedded them at the dealership when I had them re-do them. Took the car out, used an IR gun to measure temps, bedded them with a similar procedure as the GT-R brakes, although obviously not the same as it's not a GT_R. THat's what I was told. When I got the car, it felt great. Stopped awesome, and I could look at the rotors and tell the brakes had been bedded, or at least something had occurred, as there was definite pad transfer, etc. Smelled like it, too. GT-R tech did the work.

Either way, it's not dust, it's a warped rotor. If it were just dust, it wouldn't have taken a ton of metal being removed to fix the left front rotor, and just a quick clean-up for the sake of it on the right.
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I tried re-bedding them the first time, 6 hard stops from 60, 4 from 80, drove around on the freeway until the rotors cooled off, never came to a complete stop. It only exacerbated the problem. This time? It's going straight to the dealership for a new left-front rotor.