I am building an Ultra Sport + that has a cowl and since this is my first cowled airplane I was wondering what the best fuel line setup is? I am powering it with an OS 70 Surpass 4 stroke inverted if that makes any difference. Do I use 2 line? 3 line? Refueling Valve? Fuel Dots? I have heard of people who have had trouble with engine flooding upon refueling. Thanks