The low temperature is appreciated. I believe the people here making negative statements have a long term result in mind. Like Walt and a couple other mentioned running in a deep vacuum is harmful to the unit and not good for a lasting unit.
Walt has worked for the general public for many years trying to give his customers a lasting product, he as well as kayle and Johann are thinking in long term. Thanks Walt for looking out for the consumers.

I think we should appreciate constructive comments on both sides and learn from each in a gentlemanly fashion.