Since I assume you still have warranty take contact up met the dealer or with Jayco and explain the situation. On production lines they always can miss something. And since it is related to your furnace better have an expert give you advise. Maybe you can put up some pictures of the problems.
2014 Ram 1500 CrewCab 4x4 5.7 Hemi 3.92 Rear and Air Lift 1000
2005 Jayco Jay Feather LGT - 29Y GVWR-6500 lbs.
Pro Series 1200 lbs. WDH with Double Sway Bar.
Champion 3100/2800 watt Inverter/Generator-Onboard Solar Power
ALJO 'Forever Young @ Heart' provide on their travels Music Entertainment to Senior Care Homes