If it's only on steep and narrow, not on steep and wide, it might be strictly psychological. You're less confident in that area, so you "lean back", both figuratively and literally. With your weight off your front foot, you have to throw your weight around to get the steering.
I have a number of areas where I get freaked out and lean back. The way I handle it is to deliberately go into those areas and consciously keep my weight forward. Do it as slow as possible a couple of times, then gradually ramp it up, but if I lean back, I start over.
Yeah, that's me, Tracer Bullet. I've got eight slugs in me. One's lead,
the rest bourbon. The drink packs a wallop, and I pack a revolver. I'm
a private eye.