I have a 1997 Polaris sportsman 500 with approx. 900 original miles. Several months ago more than 6 I rebuilt carb Everything ran great for several months. It sit for may 6 weeks do to no time. It now starts and idles will even drive but only till it gets to operating temp and then shuts down like out of gas. Let it sit 10-15 minutes and starts back up and repeats same scene. Not real familiar with quads. While running I flipped choke and it immediately died. Any suggestions appreciated.