If it is just dying and not gurgling then dying, then you definitely are lean. A turn does mean a full 360 degree revolution in RC. The factory settings are typically very rich, so if you are there then you have another problem. I'm assuming you are using a new glow plug and fresh fuel. If not, change those first.

Then check your fuel tank and lines. An air leak anywhere will cause your problem, as will a tank that is too low or a pickup line that has come off or is leaking. Your vent line going to the muffler could be clogged or leaking also. And don't forget the pickup line inside the tank.
If all of that is right, then you may have an air leak in the engine itself. There are 3 normal places for that to happen: The carburetor inlet where it attaches to the engine, the backplate gasket, or through the front bearing. To check it, get a straw that fits your carburator venturi and seal the exhaust outlet. You should be able to blow a fair amount of pressure into the engine without any air leaking out. If you hear leakage anywhere, a little soapy water will help you find it.
If your tank is good and your engine isn't leaking air, your 2 stroke will at least start and run with a wide variety of needle settings.