After attempting to rebuild my gl1000 carbs for the third time I have given up - runs okay - but the gas mileage is horrific. I have bought a single carb conversion manifold & carb - unfortunately came with no instruction. I am wondering about the electric choke setup -how to wire it? Or should I just hook up a manual choke to it. Also looks like a pre heater or something like that at the bottom of the carb - is that needed? I will only be running it in warm weather. Any instructions / advice would be appreciated.