Tko,
Welcome aboard.
We have the 335RLBS similar in many ways. Something I had to add was due to the placement of the Thermostat. Ours and maybe yours is mounted on the same wall as the TV compartment. The heat from the TV was warming up the wall and having an affect on its ability to do its job.
I removed the TV and added 1" styrofoam to the right inside of the TV Cab. Now the wall stays cooler.
Check out my pics at
www.msnusers.com/azstar Click on "Pictures" at upper left or bottom right of first page. There are 3 pages of slides with upgrades we did.
Again Welcome and Happy Camping
Steve & Nina
03 Mountaineer TT 335RLBS
2000 Dodge 2500 Quad Cab LB V10 2WD Posi. Reese HP Dual Cam
Prodigy-K&N-Mobil 1