This is the one that has the bolt on support pieces on each side. Can you buy the bushing that goes in that piece? JD shows the whole piece as AR104003. This belongs to a friend and he replaced seals last year and leaking again with very little use. I don't remember for sure what JD told him about those support pieces. They were either not available or very high priced. Do any of you know if Bolling Machine would have parts for this one?