I have had problems with the shock on my old kx450 for a long time now. Had it rebuild once already and now for the second time I have lost all rebound. Its all spring. So I tore into it today to see what I could find (if anything) well first off there was no nitrogen in the bladder. After an hour trying to get the cir clips out I pulled out the rod and found that there was a long piece of plastic that looked like a bushing wedged in the valve. I have no idea where it came from or how it managed to become wedged in the valve/stack. I will attempt to upload a picture of it. Any ideas what it could be?