I too have a Grace frame for sale, I never had any problem with the rollers bending but I did change out the plastic tracks for stainless steel. I had an 15" Bailey quilter on it (sold) they are a very affordable mid-arm. It didn't take long for me to know that I loved frame quilting and wanted more bells and whistles so a few years later when I had saved more I got an Innova. The grace frame I have is very sturdy and sets up in 3 sizes, I think it's the top or at least near the top of their line.