I got a RETUL fit last year but the position I ended up in was uncomfortable. I was down 30 watts compared to my road bike in 20 min power and when running off the bike I got side stitches almost every time. I never had stitches before.
I spend well over 8 month with this position before I decided to screw it and work on my fit on my own. I guessed that my position was too crunched which caused the side stitches on the left side (liver).
Changes I made were the following:
1. change cranks from 175mm to 165mm
2. lower seat by 0.25 inch (yes, even with the shorter cranks)
3. increase reach by more than 2 inch
4. keep pad height (less drop) I am now at approx 4.5 inch armrest drop
Saddle is a selle italia iron flow (split nose, short)
I am 5'11 around 178 lbs, no major physical limitations, other than that I am not the most flexible guy. Any comments are greatly appreciated. Based on the video I realized that my upper body is rocking quite a bit, is that a problem?
Here is a vid of my new position: