How to stop front from slamming down after a wheelie?

[LORDULTIMA]

I've gotten quite close with the art of 2nd gear clutch up wheelies but I have a problem of slamming the front down at 140++ km/h everytime I close the throttle.

Even a slight closing of throttle causes the front to come down real fast

[nubian]

while wheelieing...
just ride the gas out at a slightly less steady throttle position.
the speed will eventually catch up with the gas your giving and which will then start slowly lowering the front wheel w/o the slam.

[Limited R1]

Just a little more throttle control at those speeds. Just release in smaller increments.

[XENOMORF]

When you're starting to descend, just givet it more throttle to smothen out the landing!

Easy as cake!

[Tate]

What XENOMORF said