We just purchased 2021 3100RD, took it out for the weekend to try it out (not our first travel trailer). Found that the difference in temperature between bedroom and living room is drastic. To make the living room comfortable, the bedroom is a sauna. To make the bedroom comfortable, the living room is Cold. I don't believe there's a heating vent in the living room area - one in the bedroom, one outside the bathroom, but the remaining half of the trailer has no heat vent? So then I thought maybe it's expected that the heat from the fireplace is supposed to warm up the living room, but there's no blower on the fireplace? Am I missing something? Or, can an additional heat vent be added in the rear half of the trailer?