I have a 2002 Z570 that I belive is rich on gas. We went out the the lake for 1 day and by the end it said empty, but my dads 2-up had about half left. I dunno how many miles i put on, i want to say somewhere between 60-80 miles. I was hammering on the throttle every time i took of. But i still think it is running rich for trail use. Is there a way to turn it down ??