I'm in the process of replacing the primary chain. The previous owner put a product known as CAT Liquid Gasket 138-8436 on either side of the primary cover gasket. Its great stuff except now I have to remove it. After 3 hrs I have only managed to scraped a small portion of it off with a knife. I am reluctant to scrape any deeper for fear of damaging the aluminum. I have searched the net and found nothing. Can anyone recommed a product that wont remove the paint but will help break the bond with the aluminum.