Tonight I cut out the outlet for the heater in the bottom of the fuselage. It took a few cuts to get it in the right spot and the marks on the fuselage were dead on. I then made relief cuts on the top and bottom outlet tube and heated up with a heat gun and bent out the opening to allow full air flow. After they cooled off and stayed in place I held down and did a 3 bid lay-up on the heater to make a mounting flange on the out let side of the heater. I used plastic and tong depressors to hold down and into place. Now I will have to wait 24+ hours before taking apart.