Originally Posted by UglyCook
I wonder if it could be the thread? Some machines just don't like certain brands of thread.
Some of it was silk, and some sulky and some gutterman. I think it is in the plastic housing that guides the threads into the tension discs, as the repariman took off the top and showed me where it wasn't going under a metal plate and into the tension discs. I have probably been lucky before this.