in my experience, which is limited I'll admit,
usually from a rolling start the front comes up pretty easily.
The only time I can think of from a dead stop,
was at the track when I was racing BigErn2300 on his Triumph Trophy.
I grabbed a handful of throttle and almost pulled her all the way over that time.
Coming down was a "little" rough too, got smoked that time for sure...
From a dead stop the raptor usually just breaks loose,
unless it's a hot day and the road and tire are both "sticky"...