There are irregular stitches in all directions.

If you can see holes in the fabric where there should be a stitch, your problem is skipped stitches. This is a machine or needle issue, not an IS problem. Clean your sensor wheels and track to ensure they are riding in the proper position. Check sensor wheel O-rings for cracks. If there are large cracks, they will need to be replaced. O-rings can be purchased from

Check connection jacks at sensor wheels for looseness. Check motor belt and brushes. New motor brushes can also be ordered from

For Gammill machines, as a last resort you can check sensor wheel screws for tightness. Do not attempt this unless all other options fail.

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