Posted for PAUL HERSHORIN <paulhershorin@bellsouth.net>:

 I was returning on a flight the other day and the stick started to vibrate--I
looked out at the aileron and I could see the left aileron fluttering--I
landed without any problem and started my investigation into the problem. 
Upon opening up the bellcrank cover and moving the aileron the bellcrank was
pushing up and down when moving the aileron and holding the
stick stationery.   The bearing was twisting---my question is how have other
individuals corrected this problem--the way it is designed is an accident
waiting to happen.
 Paul Hershorin
 360--471LA