Or, even if you know about them. What is your opinion of them?
I bought one about five years ago but never used it until a few weeks ago. It straight stitches beautifully. And, I did have it overcasting very nicely also. Just yesterday, it decidedit only wanted to straight stitch and it jams with every other stitch pattern. The straight stitch tensions are perfect. I changed the needle to a brand new one. I took out the bobbin and re-inserted it and rethreaded the whole shebang but nothing worked.
Any suggestions?
I still have my old reliable Singer that is pretty limited on stitch patterns.