I think someone showed on QB what the darning foot looks like on old machines. It was a little wire thingy that fastens on. I don't have one and have not tried to FMQ on my treadle. mine only has the single hole plate and I would just break needles if I tried. On newer machine they recommend covering the feed dogs if you can't lower them. Some people tape an index card over them. Since. I am not familiar with your set up, I can't offer any more advice.