Well I have had my crank pulley on for about 1 month and I have oil seeping from around the cover that you have to shave flush. I called the company and they where really cool but didnt really have any answers for me. They said it was a first for them. A ase certified shop did this for me, I know the guy who owns it he did it for free. But he said put it back stock but he wanted for me to check it out to see what might have happened. If you have any advice please help thanks.