Achieved 56.7 mpg and 701.5 on 12.38 gallons yesterday. I have 4k miles on it. I can see 800 as a possibility. https://drive.google.com/file/d/0B5HGUTpCVk4pVjE0ajg0THloX3c/edit?usp=docslist_api
Painting a couple of screws black isn't much of a big deal. Not the worst idea to have a can of black spray paint in the garage aresnal for miscellaneous projects anyway.