GHRIS WESTFALL- i would like to ask you,if i may, if your around this fourm....how much wear of a friction disk on narrow frame IHCC'S is tollerable? now i know that i can buy a new disk and answer the question, but that would not make sence if a guy can some how "re-furbish" the disk.i'am replacing the anti-rattle spring on my 72 cc and thought i'd desire to konw the difference. dont think i have a problem....drives strong anyway. but because of its age...maybe, i'am thinking. any how, you may know Doug Arnet of garretsville,oh. nice guy! i'am friends with his neighbour, Scott,{with the insane fast snowmobiles}! any info. when ever would be thankful.