I can't get this engine to hold anything near full throttle without dying immeadiatley. No transition. How do you set the idle air bleed? Do you start all the way in? It acts lean, from what I can tell. I have opened the needle from 1-4+ turns with little change. It will idle okay at a high idle, and then when you give it gas it will speed up for a little while, then die abruptly. Any ideas