Customer reports master bedroom being too cold in the winter time. Also reports house is 68 or 69 degrees when set on 66 on 100 degree days. Tech uploaded pictures of entire duct system. Duct is all intact and no insulation is missing. It is almost fully sheet metal and may be original to older house. Tech found no supply or return air leakage or missing insulation. Bedroom that is too cold is fed from the smaller of the two supply trunks exiting furnace supply side. The smaller branch travels 270 degrees behind and to the side of the furnace. Supply temperatures from the two bedroom vents are 129 and 127 degrees. Bedroom across the hall is 134. Living room is 135. Tech recommends improving attic insulation and focusing insulation on the corner of attic above master bedroom. We can also provide a free quote on duct redesign and replacement or adding a mini split to master bedroom. No housecall per Premium agreement. Uploaded pictures.