I just got done cleaning and tuning up a singer 319w. It is beautiful and sews like it was new. The only problem is the spring for the bobbin winder is broke. I believe singer part number is 66601, bobbin winder spring. I looked on eBay and contacted Sew Classics (they said they don't have one). Does anyone know where to get one or one that is compatible? I can wind bobbin if I hold down the lever manually.