My thread keeps breaking and skipping the same area on a pantograph design. I have changed the needle, set and reset the tension, changed thread, checked for burrs and cannot find anything wrong. Someone said my stitch regulator may not be working properly. What can I do to check the stitch regulator or what can cause issues with the stitch regulator? I have an Avante. I have quilted 25 quilts all with pantographs and this is the first time I have had this issue. I have used this same pantograph before - it came with my Avante machine - oak leaves.