Here is a pic of the back of one of my 2000 model clutch baskets with the starter clutch removed, see the six springs, normally with paint on. these are retained by 3 rivets, so not very user serviceable. They're normally a tight fit,, if not they jangle and rattle, strangely it throws the noise out the left side of the engine?!
You sure the baskets hitting something? they have pretty rough flashing removal marks in the basket castings. Was the nut loose? Did it have the big fat washer in between the inner hub and outer basket?