By ledge I'm guessing that you are refering to the bottom or top tracks?
If so, other brands should fit. It just needs to be the same radius. Even if the new ones are longer you can cut them, just as long as they are the same radius.
- Josh
If it's on the pressure side it could be harder to try and add more glue around the fitting(s) because the pressure can blow it back out. If it was on the suction side you would have more of a chance of it working because the suction helps pull the glue into the area. It's worth a try, but it may just be better to run to Lowe's and pick-up some new fittings.
- Josh
Blue Ridge were made by Jacuzzi. The customer service number for this line of spas is 1-800-393-3399. If you need parts Guillens is a good source for old Jacuzzi brand parts. Their website is www.jacuzziparts.com
- Josh