I also have a Bailey. I love it. As to tension, watch Jamie Wallen's YouTube video "Taking the Stress out of Longarm Tension"
https://www.youtube.com/watch?v=Q1mRhcquZTM. My tension is set at 2. Make sure that your foot is up when you thread, down when you stitch. I belong to the Baileyquiltingmachines group on yahoo.com. You will find a lot of knowledgeable people there.