There need to be separate Insulation Development controls for Rectangular and Round/Oval ducts. Round & Oval ducts typically require the seams allowances to be ignored to make sure there is enough insulation to create a "lap" of the material. Rectangular ducts require the seam cutbacks to allow for assembly. The current controls only allow 1 set of allowances regardless of duct type which means the settings have to be constantly changed depending on the duct type and doesn't allow lined round & rectangular duct to be processed together.
