I don't know that my early saddle problems are relevant to yours but I'll explain my issue and how it was solved. My solution may not solve your problem but it may start you thinking along a different path. I like a wide saddle under the sit bones but such saddles are also wide just just a few inches forward of that and that is the area that causes problems for me. When looking at a saddle in plan view, directly from overhead, every saddle has a wedge shape to a large degree. It seems that there is not much clearance between the legs though the sit bones like a 155mm saddle. Since under the padding the saddle is hard shaped plastic, I take a heat gun to the area that is too wide, which softens the plastic, and with clamps and other means, pinch that area down so it is only as wide as the rails underneath. This is about 55 or so mm, depending on where exactly it is measured. Typical rides for me are 40-605 miles in comfort.