Yes, so now you can make go in their and all of your vents cover and you will see that some of them if not most don't seat right or those black ring that you see on the counter don't come all the way up to the cooling duct.
The last pics is in the bedroom and the buffer that they had in their was off, it was more than half over where the hot air go in at.
So you have a mix of hot and cool air coming out in your bedroom or in the living area, you want to separate the air and make sure that you get cool air inside your rv.
Go here:
https://youtu.be/rxCljBVi8DU