I have a few warped recoreds, but I nebver had much luck flattening them using various methods. Then, I got a Sony PS-X800 TT with "Biotracer" (servo controlled) linear tracking arm and, low and behold, even the warped records played fine. The message here is not that you need to get that particular Sony TT, but rather that the arm you use has a lot to do with ability to play warped records.