Hello, I have a 29k that I recently purchased and I've cleaned and oiled her good, watched the videos on how to properly thread, etc but I it still won't stitch. By that I mean it moves but never picks up the bobbin thread. I think it is because the tension in the disks where the thread first passes through is to tight but if I loosen the screw on the tension disk anymore it will come off. I also tried to adjust the other tension screw at the top and that loosens it but then my pressure foot doesn't seem to stay down well. I hope this makes sense. I appreciate any guidance as I really want to use It! Thanks.