Since my new Singer 9960 was getting the fluff in the bobbin cage so bad and to get a quilting thread (to be as professional as possible!), I changed thread. Reading discussions here, I chose Essentials (brand) 100% egyptian cotton silk covered thread from connectingthreads.com.

Problem: THe top stitch line is perfect. Straight and even stitch. Stitch length is set at 2.5. However, the bobbin stitch line is crooked. Not your typical bobbin thread problem of it being to tight or to loose and that bumpy effect look...the stitches themselves are in there fine...but crooked. I mean the stitching line is literally so uneven and crooked...how can it possibly be sewing so straight on the top, but so line crooked on the bottom? I have done all the things like checking and rethreading top and bobbin. Tried different fabrics, changed the stitch length...but nothing works. Still that bobbin thread line is crooked.

Anyone have any thoughts about this? I have been sewing for 40 years and have never seen this one before! I have never had "silk covered" thread before, but surely that couldn't be the reason..or why would the top be fine? Then.. I bought 4 colors...I have heard that people have gone through several different brands before they found one their machine would "accept", but good grief..where do you start and the expense to go through how many before you fined "the one"? I want it to be right, but money is an object.

So I was hoping that if someone else has a Singer 9960 or maybe any Singer...they might have an idea. I used to use CandC Dual Duty cotton covered poly, but that made to much fluff in the bobbin cage on this Singer. My other Singer (25 years old) it worked great on. So..any takers on this delima?