I second leveling the saddle to start with. While I do ride my B72 with the nose tilted up the tinniest bit, I've never seen anyone's Brooks with the nose tilted up that far. The neutral position for a Brooks is with the nose to mid section level, then make tiny adjustments from there.
I'll try to see if I can find the old thread where it's explained better.
Everything in moderation, including moderation.
2007 Rodriguez Adventure/B72
2009 Masi Soulville Mixte/B18
1997 Trek 820 Step-thru Xtracycle/B17