Maybe I did get a lemon of a machine? I always use the black hem and I wax like crazy. I find that if I go too slow it totally jams and the whole slide part goes flying off the track, if I go too fast it skips too many stitches and then goes flying off the track. It's almost as if it works OK for about 4 passes and then it jams all over again. I can never do more than 4 passes at a time no matter how big or small the piece. And the first stitch ALWAYS drops. I am SO frustrated. I also wanted to use this machine to make some stockinette stitching go quicker on my charity projects. Perhaps I'm not meant to machine knit or it's a sign that I should have bought a more expensive machine.