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Old 08-13-2011, 09:45 AM
  #8  
Prism99
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Join Date: Dec 2008
Location: Western Wisconsin
Posts: 12,930
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If there is any lint or thread caught between the upper tension discs, that can cause this problem. Try flossing between the discs with *unwaxed* dental floss (with presser foot up).

If that doesn't work, I would try using a different bobbin.
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