I have been thinking about the same mod. That's just polly>>>> whatever it its right? Basically the same stuff as a cutting board out of the kitchen! I have some of that at work for the slides on the wrecker. I'm buying a sheet of 3/8" for the bottom of my skid plate on my Jeep. No more hanging up on rocks!
The hydro tensioner idea would be great too! I see someone has replaced lots of Ford timing chains too!