I have a QC 1000 from Brother and I sew over pins (very thin) most of the time. If your machine adjusts automatically for different thickness of fabric you should only run into trouble when the needle actually hits directly on a pin while sewing. This has happened to me once in a blue moon. Slow down when reaching a pin to adjust and you should have no problems. I have been using this same machine for 3 years now. Also, make sure to read your instruction manual. :-D