I recently did the splice and half of an airbox mod(2 holes) as I also was waiting for jets. Did a plug chop and it was running very lean, plugs were white! So I taped up the holes and am still waiting for my jets to arrive!
I will drill 2 more holes and go up some jet sizes to start.
I will always check and recheck as a topend is more expensive than my time!
My bike is 100% stock otherwise.
2 pennies from me!