How To Adjust a Crooked Power Gear Slide out

Obstruction, loose mounts, bad roller, seals, single/dual motors etc are possibilities. Mechanism type/model can help.

For Sunday travel maybe a mobile tech?

Try this Clicky

Well if your sea View is like mine and you are talking about the dinning area slide it only has 1 motor that connects the two gears. On mine I sometimes have the bolt on the front tube that turns the gear break. it's a round rod that goes into a square tube. The rod that runs from the motor to the front is the only thing that ties the two gears together so they both run out at the same time. It's possible you have skipped a tooth or two on the cogged rail that the gear turns you. You can see the rail and gears when you open the storage bays.
Try releasing the motor brake and pushing the slide all the way in then resetting the brake. The brake is the lever that sticks up on the side of the motor.