the guy who played carol ( cant remember hsi name right now ) was on howard stern a few monthes ago promoting his new record ( he sings some classic italian songs )and he was sayign that in that scene, Caan didnt like him too much and took advantage of the scene and really beat him pretty good. But he might be lying as well, cuz a few of those shots sonny gives him are so obviously fake.
on another note the one single episode i watched of gowing up gotti also had the actor who played carlo going on a blind date with the mom ( whatever her name is ) and she dissed him and thought he was a big joke