The dealer I have said for the baby lock machine that I have to have it come off the front instead of the back. The spool lays on it's side for both sewing and bobbin winding.
She also suggested to wind the thread around the nubbin twice for a better wound bobbin. For this machine, I have noticed a difference when I wind the thread twice around the nubbin, it truly does make for a tighter wound bobbin in which I could see a difference. I don't know if works this way with all sewing machines or just the one that I have.