I'm sure many of you know this little tip on threading. Instead of pulling the old thread out to rethread with the new, cut the thread of each spool at the spool, remove the old spools, put in new spools, and tie the old and new threads together with a knot. Run the machine until the new thread has fed through a few inches. Voila, threaded! Learned this from a friend AFTER driving myself nuts and renaming my machine #&&??//%%%.