Engraving overrun

Our shop was struck by lightning several weeks taking out the network and almost everything connected to it. Replaced the RDC6442G-B controller on the 80W 28’‘x20’’ CO2 Laser with a RDC6445G controller. Everything seems to work except for the engraving overrun. To engrave a single object, the laser travels about 6-7" on both sides of the engraving area. This adds significantly to the time to completion. Before the lightning strike, it maybe overran 1/4 - 1/2". What is the setting in the controller that controls the overrun? Thks

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