'Ain't that the truth! As I continue my search for the perfect satin stitch... I'm really learning how skilled Libby Lehmans Satin Stitch is. Some more personal learnings by doing:
1. Do your best to minimize table top drag as the machine does it's thing. eg. ... keep from allowing overhang ( quilt top draping off the edge into your lap, etc. ) It seems, the more pull in any direction other than what the feed dogs have planned.. the more distortion on that would-be perfect satin stitch.
2. In this project, I was using the thread spool holders on my machine. I found the small spools of thread tended to perform better than larger ones. Next time, I think I'd use a thread stand on spools larger than shown here.