08 Boging down on just opening throttle

I really don't know. Does it do it in neutral or with the clutch in? Has the fuel screw come loose?

You can pull the seat and the air filter. Get a light and an inspection mirror and check the accelerator pump squirt. Maybe the spring loaded screw to adjust it came loose and it's squirting way too much? Not sure as mine is permanently disabled.

Check down there for oil trapped in the rubber to bellmouth area too. Mop it up with a rag wrapped around a screwdriver.

Crappy fuel maybe? Like I said, I don't know, just throwing ideas out.

Edit** don't burn your glove or your hand but after you've checked out everything..

Try pulling the hot start out a little bit and crack the throttle to see if it goes away. Then pull the choke out a little and try that.
You can put a ziptie around it to pull on it whilst riding. Then at least youve got a clue as to why it's doing it. If it goes away with a little choke, you've probably got some carb cleaning to do.