Although I bring my threads to the back, I do agree with Watson and Peckish and recommend other people follow their advice! My visual issues don't allow me to bring the threads up to the top easily especially when I'm using the same color top and bottom as I usually do. I really have to hunch over a top nose close to do my finishing or handwork. I think some machines are fussier with tensions and things as well, some allow that thread to be brought up easier than others.