i have a bailey 15 pro on a hinterburg frame. and to answer the question of does it have a stitch regulator. YES it does it speeds up when you speed up and slows when you slow it does regulate the stitch's nicely, but did take some time to get all set right. i have had my bailey for going on 3 years now and the stitch regulator for about a year and i love them, great machine for the money i don't regret my choice