Hello, I realize the more vacuum the better, and that the gauges in the shed are different from those at the end of a lateral, and there are many other variables, such as biometric pressure, releasers, pumps, numbers of taps , slope ,etc. but what are the real life levels of day to day vaccum (inches) people are seeing ? We have 27/28 in the shed, less in the woods and a spirited debate about getting more. Just looking for some numbers to compare. Thanks emti