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Old 01-14-2013, 05:26 AM
  #3  
Joset
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Join Date: Feb 2011
Location: New Rockford, ND
Posts: 2,003
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i used the guttermans thread on my 640 bernia. but lately i am going with
the 3 ply superior thread. my machine really likes that. i was told the
same thing when i bought mine a year ago.
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