Has anyone added a roof vent or a skylight to their RV? I have a 27' Four Winds with the solid piece rubber roof. The bathroom and one bedroom are nice and bright because of the roof vents...but the cooking/dining area is really dark. So I want to add a skylite or vent above the table. Is it a job that can be done by a DIY'er? Im in construction and renovation so Im quite capable of this type of thing on a house...but have never "cut open" an RV...not even sure how the framework or roof is constructed. Service dept wants roughly 7 to 8 hundred dollars for labour, so I'm thinking of doing it myself. Suggestions? hints/tips?