I just got a new Brother sewing machine - XR 7700. Much cheaper than my Pfaff sewing machine that went kapoop on me & it's not worth repairing. Manual for the Brother machine says to use SA156 bobbins [hard to find locally & expensive too]. It has to be 11.5mm or 7/16" in height. Wal-Mart sells bobbins but does not state which Brother machines- 'it fits most Brother'. Can the Singer Class 15 bobbins work? Dritz Class 15 bobbins do not fit proper, a little short & it wobbles in the bobbin slot of the machine.
Any suggestions?