When the trio pull in at the hardware store in the rented Jeep, it comes to a stop accented by a canned brake squeal, but immediately after in a left profile shot the Jeep is only just coming to a stop.
At 21:18 Madge was looking down the well shaft. The rope that Joe was climbing down should have been taut with his weight. Instead the rope is seen strewn loosely along the wall of the shaft, which could have in reality been a horizontal set.