Your quilt is beautiful!!! I had a problem with my bobbin on day also not with the thread breaking but with it making huges loops ---I also cleaned, oiled and changed needle. Did not work---then I took the casing of the bobbin and with a business card slid in thru where your thread go thru and little tiny piece of fuzz came out I laught and thought will that's not big enough to cause the problem but guess what I guess it was cuz she started sewing beautiful again