We own a 2007 34n have owned 5 years.check carefully for delamination,especially around and under awning brackets.Check out roof caulking they did a lousy job at the factory on ours.Check out skylight for good seal on roof,it is only mounted with wood screws,screwed into 1/8 plywood on the roof.Also check large slide on drivers side (couch &dinnete) for sag in the center preventing proper seal from top slide gasket.To be sure slide gasket seals open slide look at gasket from outside from stepladder be sure gasket stays in contact with slide in center.Mechanicly we have had no major issues in over 10,000 miles,like the old saying goes you get what you pay for.
good luck
Rick
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