In the interest of cutting down on the inventory we carry in the trucks, I would like to use the new R-437a (MO49Plus) to replace R-12, all of the R-12 replacement blends, and R-134a. We use a very small amount of R-134a and my tank racks only hold 8- 30lb. cylinders. Most of my refrigerant usage will be R-404a and MO99. I can't find any reference to this usage online and Dupont was supposed to call me back, but hasn't yet.