Cleaning up that shuttle changed the stitches. They aren't so puckered and the tension has been decreased on top now that the bobbin is moving freely. When stitching small pieces, the machine curves them to the left. Does that sound like a presser foot issue or a feed dog thing?
After reviewing my herd, I've decided that Climax Kate may need to be sold. I'm not terribly attached to it and only have space for the best sewers. Someone's going to love her...