Does anyone have any hints or clues as to what I can use to clean the bobbin winding spool on my Viking Platinum? It's been 'sticky' for a while making it difficult to remove the full bobbin. Today I had to wait until DH came home to pull the full bobbin off. Had to use my featherweight to continue sewing which was a treat except I was trying to line up two pieces of black fabric and sewing on a machine with a black bed. I think I'm half blind now.
TIA