I have one of the early Ranger rideons and I am wondering if anybody knows where I can get the friction disc material or anybody who can do this work. I'm not sure if the friction material goes on the alloy gear slider or on the disc on the bottom of the motor. I'm guessing it goes on the slider? Any thoughts, they are such a basic simple machine to just cut grass without all the bells and whistles of later machines. Pity to see this one go to the scrap because of not being able replace the friction material