smells

I took it to the local dealer today to check and it is running Map2. It smells like gas most of the time, the dealer said not to worry about it. I asked if a PCv and custom map would help. He told me to leave it alone. It has Arrow twin exhaust and if they come with DB killers mine doesn't...

As above really, oil level isn't rising or anything but it stinks of fuel, any idea why? The bike rides fine, doesn't bog down and splutter. I accidentally overfilled with oil so drained some out with a syringe and it was stinking.