Originally Posted by
skycyclepilot
The LBS did fit me when I bought the bike, but as you know, there is fine tuning to do during the first few rides, and that's what I'm going through now. The biggest issue was finding a comfortable saddle. The LBS is geared toward long distance, high speed riders, and they kept pushing me toward hard, narrow saddles. Turns out my sit bones are much farther apart than average, and I need a wider saddle. Once I figured that out, I found a reasonably comfortable saddle.
Even with the wider saddle with a deep channel for the perineum, I still have some pressure on the very front of the sit bones on either side of the perineum, and on the perineum itself, thus the desire to move the handlebar in and up, so I could sit more upright, and move my weight back more onto the sit bones. It worked, but the bike is a little more squirrelly. I may go back to the original stem and move the saddle forward. I already have a zero offset post, and the saddle is most of the way forward as it is. As someone else mentioned, I might need to split the difference and get a 100mm stem. And I may STILL not have the right saddle for me! More experimenting in the works.
It sounds to me like you're trying to address a saddle issue by changing stems, which is the wrong approach. The stem should be adjusted to address problems with your upper body.
Your hip position determines KOPS, not the saddle location. You can typically move the saddle fore/aft 20mm without changing KOPS, simply because you wind up sitting on a different part of the saddle. Moving the saddle forward will result in you sitting on a slightly wider portion and may improve things. Experiment with consciously sitting a little fore/aft on the saddle and seeing how it feels. Saddle angle can also have a huge impact on numbness, a few degrees down my improve things for you (Or it'll feel like your continually sliding forward).
What saddle are you currently riding? There are those who are basically comfortable on any saddle and have no issues at all. And then there's those of us who its tricky to get the saddle fit dialed in. I'm very finicky with my saddle position, due to the pressure you mentioned above.