Thanks but I had already found this. Bobbin seems to want to spin on the shaft. Now I noticed the shaft is split. I wonder if the bobbins are worn and maybe I need to use that spilt to spread it out a little to secure the bobbin?
also the stop function for the needle bar does not appear to release. Will it be an issue to use it that way? Or how do I fix that? Treadles smoothly with little effort.