So I have various flat falls ranging from 100g-300g some of them modified with ticker cord and hooks and some not. My question for the modified flat falls is, how long before I need to replace that cord. I noticed after a dip in the water the cord turns yellow. Is this just happen washing with fresh water or not? Some of these flat falls haven’t even been bit on. Do I need to replace these stained cord leading to hooks every year? Cord isn’t frayed. Also I have pre made flouro leaders ranging from 80-200lb still attached to some flat falls. Again some have caught fish most haven’t. Do I need to replace these heavy flouro leaders every year even if they haven’t been on fish? Thanks for any help.