I am reassembling my fork on my 76 cb550 and the 6mm bolt (hex head) on the underside of the fork tube won't tighten. On the other fork it tightened fine, but the other one just keeps spinning like it is about to tightened but I just keep ratcheting it under pressure. No, it is not stripped I have taken it apart several times to make sure it isn't doing damage. I pushed a long dowl stick down the fork shaft to try and stop that 6" pin w/ spring from spinning but I can only keep it from spinning so much. Anyone had this issue?