Venus 40 Problem
Strupp 22:
The tip of the wing at the trailing edge should be tilted up a bit compared to the root. Thats washout. Causes the root of the wing to stall before the tip. If the tip is tilted down a bit at the trailing edge,thats wash in. If so, use a heatgun and see if you can twist the wing to put about 1/4 in. of washout in it. Make sure both wings have the same amount.