I have a donor valve cover that I am going to paint and install when the weather gets better here. I was looking at it and saw some silicone gasket material on 2 spots on the inside of the valve cover. Can anyone tell me what these areas cover ? I am just curious of what I am going to run into when I do the swap. I am assuming that I am going to have to buy a tube of Permatex gasket material and replace right ?