Hi, Judy,
It is not needed to change the tension that you use while working with this thread. However, tension does affect the way that things look stitched out, so you may want to do a sample where you can experiment to find the perfect balance for you. I hope you find this helpful. Please let me know if you have any other questions, and have a great day!
~Leah L.
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Judy W.
Do I need to adjust tension? I have a Bernina 750
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