The driver board switches are set to 1/16  and should result with X axis 320 steps, but in auto Settings it has set the steps to 160 This suddenly happened after re down loading Mach3 ( had been fine for 7 years) This has resulted in less detailed machining. I have now replaced the computer running the same Windows 7, this was done by an IT guy I know and issue has remained the same Has anyone any idea how to fix this?