PSI on the labels is *not* proper inflation. You need to know the tire weights so you can look them up in the tire manufacturer's inflation chart, and set them based on actual load on the tire. I weigh RVs with tire scales, adding tires on an axle to get axle load, and axles to get gross scale weight. Most of the RVs that come to me have the tires over-inflated for the actual tire loads, and that wears them out faster.
The pull release for the generator has a bracket which attaches to the compartment side wall. It appears in the video that it flexes too much and is not a solid attachment. With time I can envision the bracket separating from the wall.