Nativetexan, I was only doing a test square so I had free movement. I'm sure with just stabilizer backed fabric it would have been fine. Maybe just not designed with quilting in mind?
MadQuilter, it is for sewing circles. That's what I thought I was doing--sewing circles. Although I did have three layers under the presser foot. The circular ruler and foot is definitely an idea worth exploring. I have never done ruler work only FMQ and straight-line quilting. Sounds like a steep learning curve.