bootswithjay

I am currently struggling with the 52w22 post stitch twin needle and have a couple of questions. 1) My top stitch is not locking with may bottom thread, resulting in the lack of a finished stitch. It will occasionally catch, but not always. Currently I am using a fairly cheap nylon thread. Could the thread be causing the issue? Is it a problem with tensioning? Or timing? 2) I need a second needle set screw. the gentleman who had it before me only used it as a single needle machine. Does anyone knew if other set screws from industrial machines could work? Thanks for your help.

How does one adjust the bobbin tension? I've fiddled with the top tension, but I don't know how to mess with the bobbin.

I recently acquired a 52w22 post stitcher. I am struggling to really figure out how to get it all working. Every time I go to stitch, I end up with bunching on the bottom side of the leather or a knot near the bobbin. Does anyone have a resource that can help with threading and tensioning this particular machine or one similar?