Going back to the original rebuilding shop for a second bite at a possibly rotten apple might not be the world's best strategy. Very few people know how to rebuild Babbit-rod engines, particularly when it comes to scraping rod bearings for the correct fit and setting up oil clearance with shims. Aiming the spray nozzles for proper connecting rod lubrication above idle speed is also a vitally important procedure.
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!