I really like this idea of next bigger fuel line. Im guessing just use a spring clamp on carb nipple or is it necessary? You wouldn't have the size handy by chance?Lee put the next bigger fuel line in just open up the holes and slots. Makes a big difference in the way they start and run. I have done it to the 5 i have. Remember that when you double the diameter you increase the area 4 times. Just a little bit bigger makes a difference.