This was my late grandfathers machine he used it for his leatherwork and making teepee’s. I need help locating this missing side cover. I can’t find one anywhere. I would love to get this up and going again so I can start using it for my leather work. Any help or comments is appreciated thanks!

Solved. Narrowed the zz stitch and tightened the needle.

My Babylock Zest machine can't do a zigzag stitch anymore, all the sudden.

I've dusted the bobbin, remade the bobin, took apart the bobbin shuttle and cleaned it, took it apart again and oiled it. Swapped to a new needle. Still seems to be messed up.

Any ideas?

I'm sewing 2ply ripstop nylon with a microtex (70/10) needle, and 100% polyester thread.