Sweet trailer. I have an 06 335fs that has treated us very well. Here is the main things I have worked on. The top seam for the nose caps notoriously leak. Look for cracks in the sealant. I used the RV roof repair tape and it has been good since 08. The dometic fridge has a recall on it and the fix is free. Don't run the bathroom vent closer tight or until it clicks. The plastic gears break easily and are hard to find. Upgrade the tie down anchors. They are weak, some of mine missed the frame, and a bunch rusted and broke. I put a 4 seat SCU in it and those anchors couldn't hang. Check the screws that hold the metal frame for the rear ramp to the walls every once in a while. They run vertical along the back corners and are under the diamond plate cover for the screen. ALL of mine backed out and or broke and I had no idea until a friend was following me and noticed the door frame was wobbling down the road. The sunroof over the shower will eventually crack and leak too. Keep an eye on the landing gear. There is a driveshaft that goes from the motor on the drivers side to the jack on the passenger. It is held to the motor with a stay pin and a cotter pin. Mine worked loose and only the drivers side jack operated. I know that sounds like a lot but we have used the crap out of our trailer, it has a lot of miles, and has been stored at the river for a few summers. All this stuff is usual maintenance to me and the trailer has given us years of good times. I am sure yours will do the same.