I took my YZ85 out the other day for some pretty hard trail riding, it ran great until about an hour into my ride and it was acting like it was running out of gas when I was on the throttle. It still had a half tank of gas. It then died, couldn't get it to start. Finally got it to start with the choke out and had to baby it back in 1st with choke out to keep it from stalling. Someone said it sounds like the float in the carb??? Any thoughts would be great!!!!