Even a slightly dirty assembly job can introduce debris into the oil pump relief system, resulting in a sticky pump relief valve. I do my best to keep everything associated with the oil system surgically clean as I put an engine together.
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!