At one time, there was an online tutorial on how to upgrade 2003 WR450 starter clutches to the 2004+ version -- but it no longer exists, I am told. I have the parts and will be doing this upgrade to my 450, but need to understand exactly where to place the additional bushing needed in order to make the 2004+ starter clutch fit in the 2003 side cover/housing. Could someone give me the details and possibly a photo? I've studied the shop manual and it is not apparent there. Thanks.