Hi Guys Iv been using a vg200 Digi vac it's playing up some what . It seems to work ok till it gets to 110 microns then it rotates from 110 to 100 to 98 to 93 to 87 to 74 than back to 100 or 110 it keeps doing it over and over with in a 10 second period , as well I noticed when I isotate the system the gauge goes to 600 over a 20 second period , then I isolated the gauge set only so the system was nt connected and it did it again. I am using it on system that had a gas leak the leak is fixed the gas was recovered and I started the evacuation