From what I understand, there is a learning curve for this device. I have an older Bernina 1530. It takes time but it is just matching the same speed on your Bernina duplicating the way that the fabric moves when the feed dogs are engaged. When I started learning in the 90s, I found it easier to follow a line. Another problem quilters have is not looking an inch or so ahead to where they want to go. So many newbie just look at where the needle is and you need to look ahead to where you want to go. I hope this new gadget helps you. Good Luck