My Racelite boom blocks have seen better days and need replacement. One of them has developed a flat spot even though it spins fine. Anyway since i am going to have to pull rivets to replace the blocks, i may consider moving them. Two questions: I know that it is legal to move the boom blocks, and I have heard that some people move them. Has anyone found a location that is better? What are the benefits of this move? What type of blocks should i use in replacement?