How many miles to the tank is the zx6r REALLY supposed to get? I ride almost all in the city (and like to keep it around 8-10k rpm) and have to spend appx. 5 min to warm the bike when cold HOWEVER I am only getting about 80-85 miles before needing the reserve. When I got to fill the tank, it will only take 2.75 gallons of fuel. I thought the tank was 4.8 gallons. I KNOW the reserve is not 2 gallons, so what gives? Any thoughts?