My 1st quilt frame was a Grace Pro Frame so maybe similar to what you have. And yes, their rails bowed terribly so I went out and purchased 10' galvanized poles. I slipped these new poles over the old ones and screwed them end at either end. Never had issues after that. I couldn't just replace the poles with these new ones due to the end connectors so slipping them over the old ones and screwing them in so they would turn together worked like a charm. When I gave the frame away 7+ years ago the couple that came to get it wanted those galvanized poles too. They traveled from Ohio so guess it was worth it to them.