Other mistake: After Jack leaves the apartment with Mr Angelino, Janet and Terri are sitting on the couch trying to figure out a way to get money for Jack. When Janet gets up you can see the bathroom door start to open behind her but there is no one else in the apartment to open it.
Other mistake: Jack goes into the kitchen with Janet to get "Jim Bob" Furley a glass of brandy. When Jack returns from the kitchen to hand Furley his drink, Jack trips and spills the drink all over Furley, causing Furley to give the Partnership to Jack's Navy pal, Bill. Furley then excuses himself and heads to the bathroom to clean up. But Furley isn't supposed to have met Jack before, so he wouldn't know where the bathroom is. He goes right to it anyway without asking where it is. Lucky Bill didn't notice.