Oh, one more thing. I've experienced my saddle too far back, and I've experienced it too far forward, and I've experienced it at a goldilocks position that was (you guessed it) just right in my own experience. When the saddle is too far back it kind of feels like you're pushing yourself back off the saddle during a hard effort. When the saddle is too far forward it feels like my knee angle during the more powerful parts of the pedal stroke is just too sharp. It's hard to describe how I felt with that, but I felt something, and I didn't like it. My current position, which is as close to KOPS as I got it by myself, feels the most natural, with the most neutral effect on the rest of my body during high efforts, a more natural-feeling leg extension during the most powerful parts of the stroke, etc. I'm sure there's better terminology that the fit gurus could use to describe it.