cbk07,

Surprised there have not been any responses to your thread yet.

I find your discovery of a "wash-out" in the main wing interesting.

I'm sure other present, or soon to be, owners of the DP330L will too.

Your main wing may not necessarily be "misadjusted and warped".

If both wings have the exact same twist, it may be by design to provide a little bit more time for you the pilot to avoid that "point of no return" during an unintended stall condition at slow speeds.

In Wolfgang Langewiesche's famous book, Stick and Rudder, he wrote,

"By various arrangements designers make sure that, as the airplane is slowed up, the stall will progressively spread along the wing from the wing root toward the wing tip, rather than occuring perhaps at the tip first. Thus when the ship is all slowed up and the center part of the wing span is already stalled, the wing tips still have a reserve to lift which the ailerons can "get". The simplest way to achieve this is "wash-out", a twist of the wing that makes the wing tip ride always at (a) flatter Angle of Attack than the wing root."

""Wash-out". The wing tip is set at a lower angle of incidence than the the wing root. If the airplane's Angle of Attack is increased, the wing root will reach stalling angle first. The stall will thus extend out to the ailerons and the wing tips only if the pilot then pulls the stick back even more."

__________
Joe B.
[email protected]