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NW Ohio | I think it is called roll cal. You have to set an A/B line, hit auto and wait for your offline distance to reach as close to zero as possible, mark the center of the drawbar, drive away a couple hundred feet then turn around, acquire the same line on auto and stop by your mark. Measure how much it is off and put it into the cal. For example left 7" this makes up for the globe not being centered or NAV not truly lined up along with other variables. | |
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