Ty Karl snarl. I didn't go ahead with the 80cc/100cc configuration. Right now it's 100 percent 100cc. I've checked for air leaks and that's all good but I have a gallon gas tank and my bike was not running for about a month.ive been doing a 40:1 oil gas mixture. I'm thinking I should drain my gas tank and make a fresh gallon.... what do u think?