Confusing. Let's back up. Do you know your center to center and outside sitbone distance for certain? Is the 143 correct? I did use a 143 for awhile, and there was a lot more pressure on my sits because it was too narrow. The bones were too far to the outside of the saddle, so the pressure was painful.
Also sounds like you need a more T-shaped saddle due to the mentioned chafing.
Which Brooks saddles did you use? And why didn't they work?
Next, have you ever had any joint pain in your hips independent of riding?
Also, you mention moving your saddle height and fore-aft position, which makes me think you aren't in the perfect place to begin with. The saddle may be causing pain because you need a good bike fitting. I've had fittings by three different fitters, and only one actually knew what he was doing. :rolleyes:
Maybe start with measuring your bones, and schedule a fitting?
Noticed this thread, lately. Looks like the most recent recommendation for your area is a fitter by the name of Michael Sylvester. :)