When Carl tells Harriet and Rachel about his blood pressure, he sits down and starts to open a magazine. In the next shot, the magazine is already completely open.
In the aftermath of the garage getting wrecked, the moose head swings with the snout facing outwards. In the next shot, the snout faces Carl.
Shortness of Breath is not caused from Blood Pressure. It is caused from a person either having a Heart Attack or a Pulmonary Problem.
When Urkel drives away from the garage door, he seems to be pulling it back into place. This is due to the rod used to move the Isetta toward and away from the door, which is clearly visible after the car is parked.
Visible at the top of the frame when Eddie asks Urkel about the Isetta's price. Then the shadow of it is visible on the fence behind Laura.