bobbin spinning in long arm
Does anyone know what causes a bobbin to spin in the case on a long arm? Just brought it home from the shop had it serviced and adjusted (250 miles round trip x 2) & now the bobbin is spinning and bobbin thread breaking. Oh, & I have a Bobbin Genie in the case. Has anyone had this problem or know of a fix? I tightened the screw just a smidgen & was able to finish but I think the thread broke one more time after that. This is a new problem to me.