Judging by the color, I'm guessing its an 06 or 07 but I could be wrong. As for the gap, if the one side lines up but the other side doesn't then I suspect the "projections", the parts of the plastic that stick out, on the fairing aren't sitting properly in the rubber grommets/holes on the tank.
I've fought with this on my bike for years, I start by getting one side of the fairing set properly, then gently pull the other side of the tank fairing back and away from the bike, then while still pulling it back bring it towards the bike. Think of it as like wrapping a towel around the tank but keeping it nice and tight. I'll push firmly on the points where I know the projections are in case they haven't slid in and if everything looks good then the rest of the plastic goes on.
Its funny how we live in a society where the gap that dave350v8 posted is unacceptable, but this gap IS acceptable:
actually I was just looking for an excuse to post a nice pic and hopefully make someone smile today! :)
* Last updated by: Nightmare on 2/6/2018 @ 7:16 AM *