I have an Eagle Ridge 35QSQB, and my furnace doesn't seem to be blowing out of the vents hard, you have to hold your hand right up to the vent in order to feel the air. We stayed in it a couple of weeks ago during some pretty cold weather and it wouldn't keep the trailer warm. I have checked what I can as far as duct work and it all seems to be connected, but in the front bedroom you can barely feel any air at all. Any help would be appreciated.