I need more practice with hand stuff, use machines quite a bit having a sewing, alterations and leather business with my wife, she if full time, I am part time, been at an iron foundry for 25 years now, leather is my retirement hobby, lol. Please feel free to see our site@ www.stitchntimemarinette.com Check oils, belts, drives, look at your stitch timing and start slowly, turn down speed on servo drive, it will help, have fun...