Thanks for the info. on my ride this morning i tried a few different adjustments, and i think i am getting closer to the sweet spot.

A note for new Brooks users- i have found that i over compensated the upward tilt- after reading in many places that the nose should be tilted upwards, i had mine adjusted with the nose up slightly too far. for me- just slightly above level seems to feel better.
With regards to Fore/Aft position, does anybody use a specific algorithm to determine this? E.g. i believe the 'knee parallel to ball of foot while pedal is horizontal' method is used quite often for a lot of road bikes. Does that rule stand with the slightly different anatomy of brook's saddles?