I am taking delivery of my new x739 tractor with 60" deck in two days and can't wait! I'm trying to think of everything I can do to prolong the lifespan of this machine. I've been reading a lot of recommendations on here so I appreciate you all for that. I have read about certain people wanting to protect the underside of their mower deck with protective coatings. I've gathered that the two most common applications are a type of "Tough liner" or truck bed liner coating, or spraying the underside with something like Fluid Film. I'm looking for opinions from people who know anything about this or from anyone who has first hand knowledge. Any input is appreciated. Also, what other items should be on my immediate checklist upon delivery aside from the obvious things such as checking grease zerks, fluids, etc. Thanks!