08-06-16, 09:17 AM
It's normal for a small amount of fuel to escape via the breather when the bike's laid on its side with a reasonably full tank.
As for the starting difficulties, have you tried starting without choke? The carbs on the Fazer are set to run a little rich by default, most people find they don't need choke unless the weather is pretty chilly. If its behaviour has changed then it may be that some disturbed debris at the bottom of the float bowls has blocked a jet.