[Big S]

You need a steel ruler (or any other accurate measuring device) and then set your machine to jog say 1000mm. If the measurement that the machine moves is further than 1000mm on the ruler you need to decrease the pulse equivalent and vice versa for if it goes shorter. Be sure to use the adjustment in the menu. I think the setting when you run a file is for scaling cut sizes up or down (haven't tried it myself yet though)

Shannon.