I got a really old mower and I have looked everywhere for a replacement cone. No luck. So I thought maybe I could put some leather on it. Here is my question. The "Bell" side doesn't look as though it ever had material on it and the "Cone Side" is kinda like brake material. Should I try to adhere the leather to the "Bell" side or the "Cone Side" or is there another option? The 'Cone" part number is 35231. The mower works fine other than this.