I gave up at the sewer. At that point I feel like I don't have any control over what I'm doing whatsoever and I'm just throwing shit at the wall until I succeed.
When I press space to reverse the angle I would expect that I can zero out the momentum of the first hop of the same angle, but that doesn't seem to be the case.
I wish there was a better indicator for the current leaning angle, because right now it's hard to tell whether I'm perfectly upright or I'm about to hop on the unstoppable momentum train.