We've had very cold passengers in the rear of the cabin of our Baron due to strong flow of cold air coming in through the headliner, through a seam that sits right over the 2nd row of seats. We got good relief when we plugged the rear air intake on the left side of the fuselage with a piece of open cell foam wrapped in a grocery bag. Only problem is that the foam & bag keep getting blown out in flight! Any more permanent solutions that folks have seen, including some better made plugs for the air intake? many thanks, George Glackin