I am going to describe this the best I possibly can. I have just replaced the vavle cover gasket, making sure it stayed seated in the valve cover while putting it down, and making sure to not over tighten the bolts. But on the driver side of the head, the back cam there is a lip on the head which I can see oil puddling up there and I can smell it sometimes. Is there a seal I missed or did the gasket not seal right? Any help or information would be greatly appreciated.