Hello. I agree with all of the above comments, but here is another one. Make sure your needle is new and it is in straight. On another note......if you twist the needle ever so slightly, the point will enter the leather at a different angle. When you normally insert the needle, the long groove is on the left, and the scarf is on the right, like 9 o'clock to 3 o'clock, but if you twist the needle to 8 to 2, or 10 to 4, you will get a different result. If you twist it too far the machine will skip. You can try this technique on many different machines. Steve