I open mine up about five turns I get it started and as it is running(extremely rich) Istart to screw in the needle valve to lean it out. Screw it in to much and it will be hard for me to get it started again after the tank runs dry. Theres a fine line in there where it does work ok. Another thing Ive notice that after I have ran a tank and everything checkes out ok, WhenI go to fill it back up, It likes to leak Ive watched about a half tank of fuel leak out before it would stop. i guess you can chalk that up to gravity. Once you do get it running. The power is great. It even has plenty of power to spare that will even pull you out of your own rotor wash. The only thing Im wondering about is that connecting rod problem I hope I dont break another one anytime soon. My Engine should be back anyday now. Until then Im grounded. I still have my Vmax6 but dont feel like goofing with it.