If the inner pins and cups are worn, parts 601849 & 602055, they can be reused by turning the pin 90 degrees from where they were so the cups will ride on a fresh surface. I did that on my 11B in 1989 and it’s still good. Racks are not fun to mess with. I do like the pre-assembled cradle; I hope the need never arises though. I imagine shipping across the pond would be shocking.