I have a B17 and a Ti Swift.

With any new saddle, one has to find a new fore and aft position for the saddle because of the different shapes of the saddles.
If a Brooks still feels uncomfortable after a week of everyday riding, look a the point at which the "waist" of the saddle gets wider and becomes the support for your "sit bones."
Try moving the saddle fore or aft a little and experiment.
Also, tilt the nose of the saddle up a little bit so that the nose becomes level with the butt of the saddle.

If a properly fitted Brooks doesn't feel good, nothing will.
Don't give up.
Reposition or change the tilt, and experiment, experiment, experiment.

Regarding break-in, I greased and oiled both of my Brooks saddles way more than most people recommend, and it has worked well for me.
I rode through last winter during solid wet and nasty weather and both saddles look and feel brand new.