Yeah, the droop.
I remember it from my early days working in full scale aviation.
If you didn't properly balance the way you added fuel, you could end up with a tip tank on the ground and the opposite main gear up in the air a bit.
I swear, as you performed the fueling process, the wing tips would drop what seemed to be a full 36"
And the sound of those 331's......yikes!
I always liked the PT-6 powered aircraft for the way they didn't howl on the ground as compared to the Garretts.