Have you got a fat arse?

I thought so, it was perfectly comfortable the first few weeks of riding with one, but once the shape of the saddle changed and after doing a longer ride, I end up feeling the metal frame of the saddle noticably, and have pressure at the end of the saddle due to the leather stretching, it's already uncomfortable

unless there's a sure fire way of keeping the saddle shape the way I like it, that ruled the B17 out, really annoying as I like that saddle.

Ed, I guess you probably did, but you didn't say anything about it, so don't slap me for asking this...

When the saddle changes shape, there's a tensioner nut underneath the nose to re-stretch the leather, keeping the saddle nice and supportive. Were you not using it, or you saying you did re-tension but the saddle still sagged down to the metal anyway?

It's just you're the first Brooks owner I've heard say that.