Got a 06 450, 170 main, 48 pilot, 2 1/2 out on fuel screw. Rekluse clutch set up with a high engagment point and the idle turned up. My problem is that in a tite 1st gear turn, a couple of times a day, it will stall. That is when I crack the throttle it will "flame out". It is not stalling because of the clutch and it seems to be carburated perfect. The needle is stock but I am thinking of going one step richer. I know that richening the fuel screw should solve this but it doesn't seem to. I am pretty sure a heavy flywheel will solve this but until one is available, any suggestions?