IMHO, the F4 responds great to bar inputs. It really wants you to counter-steer it. At the track, if I'm looking for a bit more lean angle I just push on the bar on the inside.
On an aside, I've found the F4 does really well with trail braking. At Fontana this weekend, I was on the binders DEEP into the corners, especially turn 12, a sharp right-hander after a straight. I've read that some guys think the F4 isn't a good trail braking bike. That hasn't been my experience at all. I can just hold onto those brakes way into the corner. Even past the apex if I'm sloppy! The bike will stay on the line, not try to stand up or understeer.