int 90 mag

[dshea]

intrepid 90 mag loses tail (locks up) no left/or right control after 3/4 thr to full,
as soon as stick is back to 3/4 an blow.Full tail contol is back any suggestions
thanks .

[WillJames]

vibration causing binding of the pitch change sleve?

[cbergen]

Check the thrust bearings in the tail blade grips for pitting.

Make sure that everything is smooth and free by eliminating one component at a time.