Well I'm still on a borrowed machine that I think would seriously benefit from some of Leah's metal bending. Can't wait to get mine back and get to know it. Should be this week.
I don't see the logic in why thread tension is affected by feed dogs but I'm not a mechanic, I shall experiment.
I was wondering if you can free motion quilt with a normal open toe foot, feed dogs down and foot pressure reduced. I do that for wavy line quilting with walking foot but not tried FMQ