Here's the manual for it. For trouble shooting problems with fabric feed it suggest to check for presser foot correctly on and I guess in your case, double check the right kind of presser foot to begin with. Presser foot has to be correcly lowered, as well as stich length adjustment. There's nothing mentioned about presser bar adjustments at all. From the parts list it looks like there might be adjustent for the presser bar and parts related to the feed dogs. I can't find a word about lubricating at all, there's usually warnings about not to oil if it's so.