Hi! Yet Another Brooks Question!

I usually ride on a Selle Italia Flite or Selle Italia Randonneur (same geometry but more flexy, more comfortable imho). They do fit well, absolutely no chaffing and decent comfort. Yet my sit bones do not feel too happy after some distance, to say the least.

The owner on the LBS - who happens to be a friend - is a big proponent of Brooks saddles. I had the pleasure to ride his personal Moulton with a Brooks Swift on it a few months ago. Results were mixed: my sit bones felt instantly happy (despite the saddle not being really broken in, if at all) while my inner thighs went rubbing agains the skived skirts very badly. I ended up in blood in less than 20km - but my sitbones were perfect.

I'm building my new bike so we spoke again about Brooks and the skirt problem I had. I was looking at the B17 Pre-Aged - for the extra suppleness and the lace to avoid chaffing on the thighs. Then he handed me a solution from under the counter - an used Flyer that had seen 2 previous users that had taken care of suffering for me. We made holes in the skirts, laced and properly tensioned the saddle, and I'm riding it now.

The good: the leather is insanely supple and my sitbones never have been as happy. My thighs are not rubbing at all (seems that even if I did not lace the skirts it would fit well, the B17 having longer skirts than the Swift).

The bad: The B17 has an hammock/banana shape. While I tend to slip forward (not that much), the nose (well, before the nose, actually) goes up and presses again my perinea - not to mention the nose comes a tad too close to my balls... Handlebars about level with saddle (slightly lower, but will be slightly higher on hoods/slightly lower on drops on my new tourer). The saddle also seems too small for me - it seems there is ONE correct position but I can't sit more towards the rear before hitting the metal structure, or more toward the frond before sitting on my perinea.

What would be your advice? What to do? Some adjustments to make? Another Brooks that might fit? Which one?
I'd be very interested in an outline drawing of the different brooks...

Thank you,
Nicolas