I would be glad to help..always thread the back looper (the first one one the right..then move over and thread the upper looper the second one from right..at this point i always loosen the looper tensions and with presser foot raised pull the looper threads to make sure they are moving through smoothly. repeat: do not thread the needle threads until after lower(back looper is threaded) depending on model and make..usuallin the inside needle is threaded and then the outside needle..again thread them with presser foot up (no tension) to make sure thread gets into tension.