Shemp's hair changes from messy to neat while skipping rope and noticing Moe and Larry sleeping.
When Larry and Shemp set up the tire jack, the jack is right next to the wheel and the extension is vertical. When Moe brings round the spare tire, the tire jack is further away from the wheel and the extension is at an angle.
When Larry is reprimanding his wife after destroying the tent in the living room, he bumps into a pole next to him.
One of the suitcases that Larry and Shemp throw over the car was supposed to hit Moe on the head, but missed its mark.
When Larry is seen climbing to the top of the car, a bag almost hits him on the head, but catches it just in time.
No sound effect is heard when Moe punches the mechanic in the stomach.