hi group, I wonder if one of you might know anything about this machine. My sister gave me her machine. It is a Viking model 669. There is no manual for it. Would any one have a manual or know where to find one, and know how old it is? Also the belt that turns the bobbin winder is gone. I took the top cover off and it looks like all the gears are metal, which I take to be a good thing. Any info would be greatly appreciated. Star love, Norma PM OES