I would screw with the pressures a little. I ran a tank at 55psi, 60 psi 65 psi and 70 psi. 70 and 55 weren't as responsive and got worse mileage. I had the best responsiveness and best mileage when I started back at 60 and went 60-61-62-63-64 and ended up having the best mileage at 62, granted the mileage was only .75-1mpg difference