hey guys i bought a used primary off a guy awhile back as some of you may know. The sheaves near the shaft have hair line cracks in them. so i got on TY and started asking if this was normal, everyone said no there heat cracks and is completly no good and dangerous to ride my sled like that. So i took the primary back to the guy and showed him and he said their casting marks. Now i work in the steel industry and deal with aluminium on a daily bases. as far as i know if a part has been casted there should be no cracks what so ever, this to me is commen sence. He advised me that these cracks are normal on srx's is this true? He did replace it with a clutch out of an 07 what sled i don't know. It looks to be the same, is there anyway i can check to make sure it will fit my sled? are all primarys the same? i have an 2001 srx 700. any help here would be great as i haven't done much riding and only have a couple weeks in the season if i'm lucky. so i would love to try and get this clutch in before the season's over. thanks