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I believe I have just about everything I need figured out on our double gang grinder CNC lathe conversion as far as operation goes.. The only thing I have yet to figure is altering the position of the where the marker starts on the preview grid. I would really like to have the plot marker in preview to be in the middle of the X on the grid. Tool offset and home offset have had zero change to the position marker's start on the grid. 
Thanks in advance.