I have 2018 t770 track loader and I've been digging into other issues but wanted to ask about the valve cover. Looks like it's been leaking and I know that's a common issue among other vehicles etc. If you can tell from the pics that it's the valve cover gasket pls lmk and do I need to buy a whole new valve cover and gasket or just the gasket? It's all on one side of the engine, oil residue and dirt caked on, started from the valve cover and goes down. I also had a water line melt on the exhaust and that didn't help the way it looks. Thanks for the help