I'm an amputee aka with similar issue. The catch 22 scenario of having to choose between a higher to the groin socket brim allowing more stability, the price for that meaning more pain (severe pain), versus a lower brim and less stability. We've already lowered the brim and busy testing it, there is more ability and function that way, but it needs to be lowered more and some kind of baby smooth padding added to the brim to protect skin damage from the hard brim. The hard brim was also narrowed in the hope that it will flex more, but that didn't work. It's not flexing enough to reduce pain and less "lip" now to the brim is causing more digging in to the soft flesh and again skin damage after lowering and narrowing the brim.