Hey I was just wondering if you might have adjusted your throttle trim? Maybe the reason you can't idle is that your trim is too low. If this is the case, you can advance the throttle trim a few clicks so the engine idles, then adjust your high speed needle, then adjust your idle mixture. Just a thought.

But like what was said above, you should find someone at the field to help you tune your engine, from scratch. It's really a lot harder for a beginner than it sounds