Try retarding the ignition riming a couple of degrees. It's possible you're hearing detonation noises, not bearings. Loosen the clamp screw that holds the distributor to the block, and turn it very slightly clockwise.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!