An aside on the terry warranty, it only applies to saddles ordered directly from them, not in a store. I strongly recommend ordering a brooks from wallingford. If it doesn't work it can be returned. It sounds like maybe your saddle is too narrow, as you say that you don't feel that your sit bones are bearing your weight. So instead your soft tissue is, which could be the source of your pain. Hard to diagnose this over the internet but consistent with what you describe.