recently ive had problems with choppiness on the outside cuts. Interior cuts are as smooth as always. Checked set screws tightened and tightened belts. I built the machine in 2004 and has worked flawlessly for the most part since. About a year ago I changed computers and took screen shots of all my settings backlash comp, gear ratios etc. thought maybe the file was corrupt so I redrew it with the same outcome. Any ideas would be appreciated. Pics attached showing smoothness of interior cut and choppiness of exterior. Tried different positions on the table with same results. Thanks