Not sure how yours are broken, there is a lot of weight on it. Mine, the inside support for the wall is compromised for a couple of inches, so the weight of the water will push outward on the wall holding it against the good portion of the track.
I believe Aqua Leader is now owned by Wilbur if you have a local Aqua Leader dealer or possibly a Wilbur dealer you might be able to get parts from them. I don't have an Aqua Leader dealer close and wasn't concerned enough to look for a Wilbur dealer