As a follow up to my original comment about this kenneth lund piece of garbage, my father has re-engineered the vertical moving wheels and changed them to casters so they swivel nicely, but the horizontal wheels we left alone. What a mistake! I hope this post helps anyone considering purchasing his engineered quilt frame - don't do it! Spend the extra money and buy something else that works better than this thing. I have no idea what I'm going to do with this thing now.