I didn't have any success at the time when I was trying to mount the rack, so I ended up biting the bullet and ordering the individual parts straight from Thule. That was a poor experience.
They don't have a parts kit, so you have to buy everything individually. Just to replace the original mounting hardware was on the plus side of $150. I ended up paying more for the used rack then and mounting hardware than I would have for a new one, and at least in my truck with a liner in it, the racks won't lock into the lowest position. If you are trying to mount them with a bedliner in place it can be very frustrating because the pieces don't lock together, and if you don't get the channel in there just right it can inside the liner.
For what it is worth, if I were doing it again I would more than likely go Yakima rather than Thule.