Rodney,
You got very lucky on that score! Congratulations. Free is GOOD! LOL! Thanks to Miriam, my 328K (Singer) is actually working properly. You don't realize that some places which are sealed still collect lint, dust, old oil, etc. My ZZ was not working properly and I was afraid we were looking at a major repair job. I send a PM to Miriam, and she suggested that I open up the area around the stitch length mechanism, which I did. I used q-tips and sewing machine oil and you would never believe the crap that I cleaned out of there. I couldn't see in there, so there's no telling whether I got it all. All I do know, is that my 328, on a decorative stitch makes the stitch the same length and width. no matter what the speed! I am a happy camper! This machine is special, because my husband (who is now deceased) bought it for me the first Christmas we were married (1963), and it has been a really special machine!
Congratulations on your find! Again, FREE IS GOOD!
Jeanette