My trip-o-meter doesn't line up and I can't figure out why. It's been like this since I purchased the car. My only guess is that the gear slipped or got worn down. What is the best way to fix this? I'd like to be able to calculate my mileage lol. Any advice is appreciated.
EDIT: Pics were taken with the car sitting still and off.


EDIT: Pics were taken with the car sitting still and off.