So I sold this 1338 supermax to a guy in Maine , I'm in ct, I never had surface finish issues when I was using the lathe. He is having issue with surface finish when using the feed mechanism. The first half was cut using the hand wheel , the other with the feed mechanism. What would be causing those lines in the finish ? The carriage appears to be moving smoothly. The headstock needs to be adjusted as there is taper, I didn't think that made any difference with this issue.