sorry if you already said this is previous posts…. what kind of coatings did you put on the flatbed on v4. Also if you know the alloy #s of aluminium the bed was fabricated out of. Also how is the bed holding up for you? Any cracks or things you would do different. I ask because I have heard of aluminum that is subjected to a lot of vibration can crack or fatigue. The kind of roads I am thinking of when asking is this question is wash board. No offense meant by this question to the fabricator or welder. just interested. Also how is the coatings holding up. Thanks for your time chris and thanks for running your business the way you do. I check this thread everyday. And have asked several questions. And they have all been answered with in a few days, and I am not even a customer yet, only in my dreams for now. hats off to you.