A very annoying  suspension noise is coming from the passenger side upper A arm in our '57 Ford car. It sounds like a bird squacking. Both front A arms had new bushings installed some time back, but that's just 3000 miles or so ago.  The left side is fine, but the right side is quite noisy. The Ford manual says that the bushings are not intended to be lubricated. They appear fine, so I checked the upper shock mounting & lubed the Balljoints, just to be sure, but it made no difference. Any idea why one side would be so noisy & the other side is fine. Suggestions for a fix?  - Thanks    


Paul