STEAD (Sept. 6) – With two races left on the schedule it’s time for drivers to seal the deal in their championship drives. So the Northern Nevada Kart Club’s latest races, which was a rare Saturday event, was very important.       At least three drivers clichéd championships and one of them notched crowns in two different classes. After winning the 125 Stock Moto main Mark Nason said, “My set up landed spot on again today. Here again, set up through the season from Mitch Kennedy. M y competitors have gotten faster as we were all within 3/10ths