Perform 2 system maintenance checked pressure and split tighten all connections added 1 lb to upstairs system of 410A to reach 8 degree subcool under warranty. Recommend having a comfort consultant do a ductwork evaluation house currently has Grey flex ductwork, duct board triangles and some flex vapor barrier starting to rip. New ductwork comes with R8 insulation and also can balance it better we cannot balance duct board triangles that carry no dampers in them system is cooling properly at this moment