sometimes I drop the bobbin in with the thread going counterclockwise.......so I have to take it all out and reset it headed clock wise. Mine works better that way, BUT recently I found a ball of lint stuck in the feed dog. I was just blowing it out, canned air won't have spit in it to rust my little ole MAchine. It was not strong enough to dislodge what I did not see. SO I am using the brush first then blowing. So far, I'm tangle free and it's been since the 4th. Hope this helps.......
Blessings,
Ruth