Quilt in a Day Forums

I have an older Nolting non stitch regulated longarm that I've had for a few years. It always sews fine and I have used the same brand of thread, needles and batting for years with it and it has always sewn great....until lately. I am at my wits end with it. I am getting knots and loops on top with some bad stitching and the occasional thread break. It's mostly just knots and loops on top. I have changed needles, thread, bobbin cases, bobbins, rethreaded, oiled, cleaned, sanded everything from start to finish. Please help....
https://s9.postimg.org/8uo57xxov/IMG_3342.jpg

I don't know about the Nolting, but could it be the upper tension has somehow got moved? You may want to check that as that is what the stitching appears to show.

Mary/Rosebud