I have a Mitsubishi FX20 wire EDM machine that I just got back up and running. Seems to be cutiting OK except that the X-Axis if running +.002" per inch. I thought it was the ball screw initially so I put an indicator on it and it checked out OK. This is a used machine and didn't come with "complete" manuals so I'm not sure how to adjust the parameters. Can anyone help me solve this issue

Thanks in advance.