Nancy, I sure hate hearing about the loss of your animal friend. It sounds like you were a good friend to him as well. I know you will miss him greatly.
Miriam, Congrats on the new grandboy!! Hope the mom and baby are doing well.
Bennett, This will sound crazy, but flip the bobbin to turn the other direction and try it, from clockwise to counter clockwise, or opposite from how it is turning anyway. Some machines are sensitive to this. Go figure. Worth a try.