I was just on another forum and read about some predators having problems with cracked heads. According to the post they said that polaris said they have had about 20 or so predators with this problem, starts out as a small coolant leak then turns into a big one! Also said that polaris thinks its casting flaw on some early models, but doesn't know how many are affected. Has anybody had this or heard anything about this problem? THe site was predatorowners.com