Can't hurt, but a pretty quick and dirty shortcut is to set the grid to equatorial, zoom in on the pole, note where Polaris is in relation to true north. Then, remembering the polar scope inverts, you want to place the Polaris circle on your scope 180 degrees offset.
So Polaris is at 3 o'clock from true north in kstars, place the circle at 9 o'clock on your polar scope.