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Does this have Lippert slide out hardware? Look in the front bay and see if the manifold is in there. It will say "Lippert" on it and have the pump and tank assy and the valves for operating the rooms. If you aren't sure, take a photo of it and attach it to your post.
See the attached link to see what you are looking for...........https://www.bing.com/images/search?q=lippert+slide+out+pump+and+tank+photo&id=961280F21F3BACCE599E26A9C911F7307BBECB9C&FORM=IQFRBA
I have made the phone chat option available for you.........
Take a look at this video from Keystone and it shows the knobs for the moving of each room by itself. Close all but the one you want to move. Clockwise to close.......... Hope that helps here. Please get back to me if you need more as all follow ups are included in our fee. https://www.youtube.com/watch?v=H0ETwE3SrCM