question for those that know regarding "sleeving" the crank and using an oversized seal. I am on what will be my 4th rear main seal#@$%!(1 under warranty and what will be 3 on my tab) since the dealer nor the mechanic that has done it in the past seems to be able to figure this out. where can i get the sleeve and oversized seal from? when it's been changed in the past the leak has never really stopped it just slows down so i am assuming that the problem is a groove has been worn in the crank. any help would be appreicated.