Try to adjust the fuelscrew first.
Its located hiddin in a slot, in front of the left carb. You need a small flathead screwdriver, or simular. Here's a picture of the location:
Before you play to much with settings: Turn it in and count the turns, so you can set it back to where it is if something should fail. Then try backin it out, but stop half a revolution/turn round before youre current setting, and see if it helps, if not, turn it in another half turn.
It should be around 1,5-2 turns out from lightly seated, but it varies from bike to bike.
Id still atleast inspect the valvelash, its fairly easy, and can give you peace of mind.
Good luck and keep us updated.