What is warm air blending????? I pulled a vacuum of about 26 inches and then I valved it off... I pulled the vacuum on both the low and the high side and then after I valved it off I let it set... I think I should have kept sucking the vacuum for 30 minutes or so and then shut the valves to check for leaks for a couple hours... Maybe this is where I messed up?????? hey I think everybody for helping me... Jim

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James A. Harris