Thank you everyone for your help and encouragement! I am piecing my first quilt on my Singer treadle, born March 4, 1919. It just turned 92 and it sews wonderfully! I was able to wind the bobbin too, must have had something too tight before...good thing because the bobbin was a little bigger than the one for the Serata and wouldn't wind on it. I am a happy treadler now!