Old 09-04-2015, 05:12 AM
  #5  
J Miller
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Join Date: Feb 2012
Posts: 8,091
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Even the ones with the "S" shaped guides can be adjusted right or left to help center the thread in the bobbin. I've played with a few of them from 99s to 66s and others and got "most" of them to fill centered.

Joe
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