Hi im doing a full timing chain,guides,and tensioner replacement.Ive already taken everything off except the alternator,hydro cooling fan pump and front cover. I know there is some kind of sleeve or bushing thats preventing me from dropping the alt but to exactly where it is,is a mystery to me.Ive pulled the top bolt and put a flathead screwdriver in the hole but i cant feel anything(insert joke here). please any suggestions would help the factory workshop manual does not show a sleeve of any sort.