The issue with leveling the brooks is that because the nose seems like is the flatter part of the saddle most people will level it based on that part. for me its the rear section where my sit bones are supported that is more important and when I level that part of the saddle the nose does seem to look slightly pointed upwards. Fiddle with it don't give up on it yet because one other thing you have to take into consideration is that the B17 has way shorter rails than most other saddles so your position may be different from your previous saddle only slightly but its enough to cause discomfort.