When Tubby is packing his suitcase to get out of town, a drawer falls out of the dresser, onto the floor. In the next shot, the drawer is back in the dresser.
When Flash and Tubby arrive at the ski cabin, you can see their shadows on the trees in the backdrop behind them.
Of the "old gang" who all grew up in the same neighborhood, two have Jersey accents, one British, and the other Southern.