the top thread looks fine, but the bobbin thread is bunching up - and once it gets going it looks like long eyelashes on the backside. i've rethreaded a few times, then gave up for awhile. it was working fine when i had coats & clark dual duty thread in it. nice (fairly) even stitches on the front and back with no or very small "eyelashes". i have an appt with the dealer tomorrow. i'll bring it with me and see what advice i get from her too.