I got 42.85 mpg today after a fill up today(can we call it 43? ). That's is my absloute best, in over 4 years. Mostly city. I think my problem is I hang on to the lower gears a little too long before shifting. I think a 19 tooth sprocket would solve everything for me.

"Catching a yellow jacket in your shirt at seventy miles per hour can double your vocabulary" Author unknown