I purchased one of his frames, and had to change the trolley somewhat. My father helped me replace the front wheels of the trolley with caster rollers which rotate 360 degrees. I like to quilt lots of swirls and the original design just didn't allow for that very well - it came out more like a square with rounded corners. But the caster rollers work like a champ! If you do this, you should have no problems. Keep in touch and let us know how it works! Good luck.