When Boss and Rosco put the phone books in a bag and then pass the bag of money and bag of phone books around with Cletus, if you keep your eye on the bag of phone books, Boss puts them in the cabinet, not the bag of money.
When Cletus is setting the armored truck on fire, you can see there is a blue and gold California license plate on the truck instead of the Georgia plate normally on the show's vehicles.
In the first scene when Enos gives up his chase his chase. He
CBs the Duke Boys letting them know he gave up and slow down. As he does it the camera cuts to him using both hand to drive as he continues to talk on the CB.
Uncle Jesse is shown to be driving a front-end loader tractor to be able to slow down the federal agents chasing Bo and Luke. When the tractor pulls out onto the road, you can see the driver is obviously not Denver Pyle, but a stunt driver as you can see by the facial makeup.
Armored vehicle drivers always lock up their vehicle when they leave it for any reason, they would never leave the door wide open and stroll into the bank like Cletus does.