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Old 05-09-2018, 08:25 AM
  #2  
bkay
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Join Date: Mar 2016
Posts: 2,823
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I have a 401, and it take a 66 type bobbin. The only time mine jams is if I forget to trim off that thread "tail" that you use to put through the hole when you're filling the bobbin.

Sorry I'm not more help.

bkay
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