Upper Thread will not pick up Bobbin Thread.
Hi, I have a Brother XL3100 and the upper thread will not pick up the bobbin thread. I have rethreaded the upper as well as the bobbin thread several times according to the manual. The upper thread comes down into the bobbin mechanism and makes the loop but it does not catch the bobbin thread. When the neddle comes up to the top you can see the loop but it is empty. Has anyone else had this problem before? Any help would really be appreciated. Thanks, Jane