That's really pretty. Glad you got it done. Hope you have better luck with the next one. I haven't had the problem you had, but I have a Pfaff with a drop in bobbin so I decided to take a look and see if the tension could be adjusted. Sure enough, there is a really tiny adjusting screw on the side of the bobbin case. You have to take the bobbin case out of the machine and look really closely to see it. Now I know where it is in case I need to adjust my bobbin tension.