[comptiger5000]

You can definitely do a good bit with improved technique. What kind of driving are you doing to get that mileage? City mileage will simply be bad, although you can make it a little better. The weight hurts bigtime around town.

Highway mileage, however, can be a good bit better. Going slow is the key. Typically, I get 17 - 19 highway in mine (at about 60 - 62 mph), and have broken 21, given the right terrain and conditions. You should be able to do better than that on the highway, as you have a much smaller engine.