ArchaicArcane, Thank you for this very helpful article. I used it today to set up a $5 red eye in a matter of minutes. I tore everything apart, cleaned the parts in a sonic jewelry cleaner and reassembled. The first few tries the tension was not good so I adjusted the thread tension a few times and it was not doing much. I went in and got your article I printed out this morning, made a few adjustments on the screw and it now stitches so much better. Hopefully when I get a handcrank attached and the machine back into its case it will sew even better. Thanks again.