Your heat duct is pinched
Woody -
As you can see, I have the same model. In one of my previous posts (I'll try to find it tonight and post here), I found the 50 amp lead-in to the transfer switch was pinching and restricting the duct that leads to the living area. There is a picture also in the Modifications section in my Warm Air Duct post.
Let me know if the helps. And wishing you-all many years of Happy Camping!
Ron
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2011 Alpine 3640RL (Beauty)
(Gone! Now replaced by Beauty3)
2016 Ford F-450 (The Beast)
Diesel 4x4, DRW, LB, CC
Comfort Ride Hitch
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