I used to joke that two people assembled our '04 Monterey. They were named WeakWrist and StrongWrist. WeakWrist put in all the fasteners I had to find and tighten. StrongWrist put in the ones that caused plastic to crack or the fastener to spin freely if it was loose or needed to be removed. I stocked a lot of "one size larger" screws.
The defroster vents were installed by StrongWrist. I got the screws out, superglued the pieces back together and put it back. They remained in one piece after that.
Our ladder was assembled by WeakWrist. It was wiggly at delivery. Once I took it apart, tightened the screws and put it back together it was fine for the next ten years. I never hesitated going up on the roof to clean, wax, inspect calk or even look at the view.