Im looking through the service manual here about how to remove the crank pulley and it says that I need a "specail tool number 6827a" which is an insert that goes in the crank to give the puller something to pull agaist. It also has an installation tool number 6792. Where can I get these?? Im wanting to do the MPX pulley and I have the jaw puller and want to make the install as easy and proper as possible. I know people who have screwed up the crank threads trying to install pulleys the wrong way and I defanatly dont want that, please help me out if you know.