Welcome to the QB from SE Michigan! I was just looking at the YouTube video of your machine. I hope parts are available for your machine. Have you tried any of the decorative stitches to see if they sew backwards? I am just curious if you can do all the functions of the machine backwards. I don't believe it will be a total loss if it can only go backwards. I use to use a treadle backwards when I was a kid. Just a thought on how to salvage your machine if a part is not available. Hopefully it is an easy fix for a repair person.