I'm actually FMQ/doing ruler quilting on my Pfaff 130 right now. This is what I do: Top tension at 5. Stitch width dial at 0. Bottom tension at 1 o'clock. Feed dogs lowered. I use a Schmetz Quilting needle, size 90/14. I use a basic low shank FMQing foot for FMQ, and the Westlee (Sew Steady) low shank ruler foot for ruler quilting. It's a gem to quilt on! Here is a picture of mine being used on another quilt, not my current project.