Thanks for your response, I will look at the choke linkage as soon as it is light and try the adjustment. Although tonight when I was running with the muffs it seams like it is sucking to much air, it seems to smooth out when you manually close the choke plate some and the air sucking noise diminishes.it seems to restrict the air flow when you install the flame arrester,but if you shut it down it will not restart until it cools down and the choke plate is closed again.input from anyone is greatly appreciated as I am really anxious to be on the water!