Maybe you should start over again with the factory settings because top end and low end sort of work together. I think its 1 1/4 turns out on low end and 1 1/2 turns out on high end. Set your peak rpm first with high end needle and work with the transition and idle with the low end needle. Make very little turns (1/16 - 1/8) at a time. Always have a fuel filter right before the carb! I think 50:1 should only be used after the engine has at least 15 gallons run thru it. Paul