Maybe this thread will help.
http://forums.teamestrogen.com/showthread.php?t=52906
Also I am totally guessing here, but I'm wondering if you might need to change your riding position a bit. You might be leaning forward by bending mid-back, rather than bending from the hips. When you hinge at the hips, it shifts the weight forward and lifts the back of your butt. Of course that can sometimes lead to different saddle issues, but it's worth considering.
Good luck.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles