I checked the air screw. It was at 1 and 7/8's. Started right up and ran fine until it got hot. Then the idle rpm's raised a bit higher and would fluctuate a bit. I lowered the idle speed and set the air screw for the smoothest response, without any rpm hang, 1 and 1/4 out. Tested the bike and it runs strong. I'll Start it again cold, and see how it works.