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Old 01-16-2011, 11:59 AM
  #56  
joeyoz
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Join Date: Aug 2009
Location: Oregon
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You may have unknowingly changed the tension. Check the tension. Change the needle. Wind a new bobbin. Re-thread everything. If none of that works, I would take it in and have it looked at. It is under warranty. Shouldn't cost you anything.
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