When Granny charges Jethro's door, her blouse changes from blue to beige then back to blue.
When Jethro has the trailer parked in front of the bank, the sidewalk view off to the side shows the wall of the sound studio with a ladder sitting in front of it.
When Granny looks for Jethro, while carrying a paddle, she slams the front door but a crew member's hand can be seen.