what is that noise?
They usually change sound if you "rudder it a bit" in straight flight. More often than not, one bungee fails/weakens before the other. A yaw will tend to suck a door open if the bungee is weak.
Sorta like figuring out a failing wheel bearing in a car. Wide open road, do big S turns to load each side.....the loud side has the bad bearing.....
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