Hello! Hope everyone's thanksgiving was great. Had a question asked by a friend that I could not answer myself. He recently picked up an older 515 that originally had a the phenolic spider but it was later reconed with a 515b cone. He wanted to know about the 4 posts that secure the spider to the assembly itself. He was in the process of tracking down a spider but wasnt sure how it was fastened?? Any help as to the sizes, explanation, etc. would be greatly appreciated. Thank you!