so as I ponder my clutch rattle on my 05 venture it makes me want to know more about clutches... what is the life span of a primary clutch on o 4 strokes? my warrior hasnt been touched in 10k miles- should it be? does pulling ice totes or sleighs shorten the life of the primary? what will happen if it granades? can someone educate me a bit on this? thanks in advance!