Thanks for all the replies. I think, maybe I have a different definition of warped because its a very exceptional record that is truly flat in the first place.
Picking up on something else in the discussion, I don't buy much new vinyl because I'm not interested in anything sourced from a digital file (which is pretty much everything contemporary) but such recent vinyl as I have bought has been disappointing in terms of the quality of the vinyl and associated noise. This is even after ultrasonic cleaning, so it's intrinsic to the vinyl stock itself.