Yes, I WISH you could see me riding, Trek and Knott! I did have my bike fit by a man who took about an hour to tweak, and did a lot of measuring, and I've had less soreness on those bones since then. Perhaps I should have asked instead about best saddle for more upright rider? I think the problem mostly comes riding flatter terrain as on the rail-to-trail rides. Here in Western PA, it's hard to go more than 1/4 mile without a hill, so my position varies much more when not riding the trail. Could be the core, but I do a lot of strength yoga and have no back problems standing all day; I think my core is pretty strong. Don't imagine it's significant, but I do have two artificial hips and a knee, and I wonder if the hips torque my pelvis differently than those with original parts. Any suggestions? Looking at a Selle Italia, as someone suggested good for upright rider.