Thanks for the tips. I checked on the Demon manual and it says just a small square of the t slot showing is where to start. I pulled the carb and it appeared to be too much. I found that the screw for the electric choke was holding them open too far even when the idle screw was backed out fully. I turned out the choke screw and set the blades to the recommended setting. After installing again the car won't start or run until I crank a bunch more timing into it. It would fire idle and run at about 20 degrees so I backed that back down and opened the blades again. I read there is another screw that some people adjust in the secondaries to allow it to idle. Any thoughts?