Sammy moved on but didn't Pappa move drugs with the Spero's/ some kind of dispute over drugs

Man Pappa is stone cold to whack a capo without permission. Anyone got any info on the Spero's? Wiki doesn't say much l

I really don't know much about them other than few things Sammy mentioned and that documentary where some former mobster said Shorty was a violent guy. And once he threatened him after he caught Shorty cheating at cards