Originally Posted by SpcAlan1
I have not inspected the prop.
But I swear, when I loosened the 'gland' up - severe vibrations
I tighted up the 'gland' - smooth running.
that is my hypotenuse - only one way to prove/dis-prove it.
Nothing to do with imbalance, bent or folding propeller since those would be vibrating whether the gland was tightened or not