Hi & Welcome!
How many stitches are the design? You may need to add another layer of stabilizer to prevent pull or puckers.
What type of fabric are you stitching the design on? You may also need to fuse a light weight stabilizer to the back of the background fabric.
Do you have a local dealer to inquire for the special bobbin?
Are you using pre-wounds?
I use pre-wounds in most of the designs I use. There is more thread on pre-wounds and it is a thinner thread.