Hi, it's me here, the one with 3 brooks saddles on my 3 bikes.
We did have a brooks we didn't like, it came on our tandem. It was brand new, It was one of the racier models. It was hard as a rock and didn't soften, with all the proofhide we could bake onto it both top and bottom.
We sold it on ebay to a 250 lb man who loved it. He probably didn't have any trouble breaking it in because he was so heavy (twice my weight actually).

It's actually a good thing to keep your heels down on a bike too, just not so far because it keeps your hamstrings in good form and maximizes your pedal stroke.