Hi! I recently purchased a Brother LS3-C53 that came with a clutch motor. Think I’ve figured out which servo to buy but I’m also seeing talk about a speed reducer and need positioner. I thought the servo allowed me to reduce the speed, sewing stitch by stitch if needed. Am I wrong here?? Do I need something in addition to the servo motor to be able to adjust speed? Please forgive my inexperience. And thanks in advance for any tips!! They are greatly appreciated.