There are tension issues when you quilt on a frame. I had forgotten about that. The bobbin tension needs to be pretty loose.
I do like the darning foot. I don't like the feed dog cover. It takes up just that much more room to make it impossible to change the needle with the cover in place.
I am putting this project aside now. I have to get a 15 ready. How glad am I that I did not spend more time on that other 66 I wanted to put on this machine. Saved myself a lot of trouble.