Actually if you understand the CAT scales process, CAT insures that the scaled weight is correct. If the trucker gets a weight violation by law enforcement, CAT will pay the violation fine. That is why the curbs were put in place. There is a time limit on this insurance. So yes there is a sense to fudging the scales.
If you can find a place that weights moving vans, they seldom have curbs, because they are not insuring the reading. But you have to watch. Many of those place only weigh an axle combination at a time and have ramps to the scales which throws off the actual weight distribution.
Dale & Mark Bruss
10 Years Full-Timing now 40' Travel Supreme
Now with a 2016 Bounder 33C
Lots of RV Information at www.dmbruss.com