This is a hobby car not a daily driver, I went through about 5 different carbs before settling with this one, all the other carbs I couldn't get it to idle right or other problems. The car is not diesleing after shut off, just one big Ka-Pow, I will check all the fuel lines again but I have not noticed any leaks. I've stopped driving it due to the raging headaches I get from the fumes, even with all the windows down. I do have 2 other ea81 carbs that I have not tried yet, hopefuly I will get some free time to tinker with this car some more. If I tried running the car with the gas cap cracked, or off completely would that stop any fumes getting into the cabin?