The bike is a Yamaha FZR400 with 38mm forks Striped down my fork today because I am getting the tubes hard chromed because the pitting is beyond the sandpaper treatment. The left fork leaks and the the forks dive badly. I think I have found out why. The picture is of the bottom end of the fork tube. You will notice the nylon ring is broken. I can't see anyway of repairing or replacing this ring. (I think I am rooted) I have a basic understanding on how the dampening of the suspension works but. I am having troubles getting my head around which valve does what. Most explanations show the basic function of the valve (holes) on the damper rod. Question:1 Does the valve in the fork tube operated on the upward stroke and the damper rod on the down ward stroke? Question:2 Would a cartridge emulator provide a solution or does the cartridge emulator still require the damper holes in the fork tube to be operational? Question:3 I am open to any idea to repairing to fault?