Keep an eye on that leak, if it doesn't go away in 500 miles, have them fix it at the first service..They do leak sometimes, but generally are pretty tight...I had a leak around one of the gear cover bolts, I just pulled the bolt, put silicone on the thread, no more problem.
The whiny gear train is normal, thats what people are talking about when they say these bikes sound like a sewing machine...Only cure is louder pipes, but thats a good thing anyway! :-D
AI is a system to inject clean air into the exhaust after combustion for emissions purposes. Its generally removed to keep the headers from turning blue, as it increases the temp in the exhaust pipes. Removing it also eliminates some hoses and tubes from the engine, giving a cleaner and simpler look. Thats why I pulled mine. The AI is the two metal tubes in your sparkplug well, with rubber hoses going up under the tank. There is a little pump deal on the frame under the tank, with hoses back to the intakes and airbox. Its really easy to remove, about half hour tops, you need a few odds and ends to plug holes with thopugh. Heres a link to the place I bought my kit from, worked great.
AI removal kit
Enjoy that ride!!!