First - ensure the glow plug is good. If the element in the plug isn't shiny, put a new one in. Next, have fresh fuel on hand. Now, richen both needles half turn from where they are now. Prime the engine by holding a finger over the carb with throttle set wide open. Flip prop until fuel reaches the carb. Flip once more. Clip the glow driver on and flip the prop smartly counterclockwise. If it doesn't fire in 4-5 flips, plug carb and flip one more time with throttle wide open. Flip until it fires. Keep the glow driver on it until the engine runs steady. Rev up to at least half throttle and if it doesn't quit, go to WOT. If it's running rough/smokey and unsteady, turn the main needle in until it cleans up and runs steady. If you keep turning the needle in until it starts to slow down a little, back the needle back out 1/4 then or until it runs smooth and steady again. Bring to idle and let it idle for a bit. Throttle up to WOT and note how the engine sounds as its revving back up. Slow revving and rough running, the idle mixture is too rich. Lean in small increments until it throttles to WOT clean and crisp. If it cuts out at all throttling to WOT from idle, richen the idle needle in small increments until it throttles smoothly. Once idle is set, run back to WOT. Let it run at WOT for a few seconds and give the fuel line a momentary pinch. If the engine cuts out, the main needle is lean. No change in rpm, it's at peak (this is the setting you want when the tank is nearly empty). If it speeds up slightly, this is the setting you want at a full tank.