well i finally hit the 10 minute mark. the tank ran out of gas at exactly 10 1/2 minutes consistantly. motor was running at 230F. still a little rich on bottom. I was driving as hard as i could to simulate race conditions. I couldnt beleive my eyes when i saw my timer. gotta love this hobby, its alot of fun learning/trying new things. gonna tinker with it a little more and see what happens next time. thanks for the help guys