Okay, finnally got to try playing with it and bumped timing to 10* btdc and has just a little "gulp" now,thinking maybe pump cam to give a little quicker shot? Forgot to mention that carb is fairly new, just bought in april, but before the camshaft change. Didn't hesitate then which is why went with the larger nozzle. Sorry for long delay but mother nature and mr. boss have tied me up this last week.