80,000 comedians out of work. Inevitable that some would migrate to the Connie forum.
As noted, on or off the centerstand doesn't make much difference on the reading. To confirm this for yourself, just check it both ways, and thereafter do it the way that is easiest for you. I tend to fill towards the middle of the sight glass, but there is a range there for a reason. The reasons is so that bored people can debate over how full to fill the crankcase, of course.