[akdavis]

Deac won't share the documentation that the later Ks (after prop problems were fixed) had improved performance over concurrent Ds (I don't really care if they outperformed older, worn-out Ds, as new planes generally outperform older ones). Since the word "improved" is in the poll, this info would seem to be relevant to the discussion. Does anyone else have documentation of this improved performance in quantified form (not anecdotes)? I've gone through my pile of sources and can't find anything but anecdotes of inferior performance and laggy propeller response (a different issue from vibration, I would assume), but I don't have the greatest collection of P-51 materials.