In the shots of Big John leaving after dropping Howie off at the prison, there is a steady rain (noticible by raindrops in the puddles). However, in shots of Howie, it does not appear to be raining and the ground is even dry in places.
As Marty searches for his stolen money just before being arrested, the big screen TV in his room is off, but when Howie gets home and looks for his dad, the TV is on.
The second black eye that Howie receives disappears and reappears from shot to shot. It is absent in the scene in which Howie and Big John shave; however, it is present in several scenes beforehand and afterward.