Here's a quick story. With my advancing age, the 'racer's posture' on the bike hasn't been succesful. 
After recovering from some old injuries,
I'm back on 2 wheels, going at a moderate pace for as far as possible.  
The wonderful Brooks Pro has been retired, it wasn't cut out for sitting upright.
I've bought a Brooks Champion Flyer, and after messing about for a while, solved the problem.
1.  I  softened the leather, using a little Proofide & a small amount of Bick liquid conditioner 
(an American product, meant for moisturizing and cleaning boots and saddles. 
Surely a substitute could be found at a tack shop ). 
This made the saddle TOO soft to ride, but overnight ithe saddle resumed its normal tension,
but was much softer. When I rode the saddle, 
my weight made the leather ride on the upper rails of the sprung saddle.  
2. I put 6 lacing holes on each side, beneath the oval stamp, and added a boot lace.  
I laced the skirts loosely, tied it, and tucked the lace up inside the rails.
This prevented the skirts from flaring, and the seating surface from resting on the rails. 
3.  A short ride proved I was still sitting on the upper rail,
but the saddle did not flare out. Using the Brooks wrench, I tightened the saddle a 1/4 turn, 
and tested the seat. Three tries found the right tension and give a splendidly comfortable ride.  
4.  As the leather stretches, and I'm sure it will, I will use the lace and Brooks wrench to correct the tension 
until the saddle stretches too much, and it may or may not ever happen.
But for now, I have a plush ride and can cover miles without the strong shoulders of my younger days.
NOTE: my handlebars are level with the saddle, and the nose of the Brooks is ever so slightly raised. 
I think riding position, and anatomy ( leg length, arm length, as well as the naughty bits )  account for the exact attitude of the saddle.