At random intervals my machine will "skip" stitching 4-6 stitches. Keeps running with no apparent issues, but when I go back and look at the line I just ran, there are places where there is one long stitch over several holes where the needle went in, but no stitch remains.
Sorry, no way to do pics right now.
Same machine randomly balls up the thread on the underside, breaks the top thread, and runs just fine. I've been fighting it through many pieces of gear, but I'm about done. Even my wife said I should get another one, and she doesn't even use it.