matt_r, does your Timber Ridge have the mushroom roof vent up on top??? Our 2016 does, and Outdoors said they put them in to help with high humidity in the attic.
We have been out in high 30's temps a couple of times since purchase in April. Have noticed much less sweating than in our previous Jayco. Can't say that that will stay the same down into the 20's that we will surly encounter this fall. We don't have the dual pane windows, but feel the trailer is very well insulated, and feel very confident in it's "4 Seasons" ability.