When FMQ can you please tell me where my foot should be on the fabric...I have the Jnome 6600 with adjustable pressure FMQ foot and I am not sure wether my foot should be on the fabric or hovering just above... ( machine pure set to 1: Tension at 5) ....sometimes the tension is good sometimes awful....and I know it is user error because all other stitching is beautiful...any advice gratefully received