I've tried tilting the entire assembly while waiting on some parts to come in. I had some time on hand so decided to shoot new video. I tried to measure fit coordinates the best possible by looking at a guide here on ST. I wanted to do this again after doing my little Felt DA spline stem elimination.

Here is the info:
BB to saddle, height: 74.5 cm
Saddle setback: 5cm
Stack, BB to pad center: 67cm, about 2.5cm less with lower stack video
Reach, BB to pad cener: ~48.5cm, hard to get this one
extensions/pad height: 10cm
extensions/BB distance: 75cm (without stupid mech shifter, I want to buy di2)
Tilt angle: 15 deg
Saddle angle: 5 deg
Rider height: 5’ 9.5”
Crankset: 165mm w/ Speedplay zero
Video 1: higher stack
I think this is what I'm going to go with for now......the lower stack I can't make as much power and looking at the video and photos I don't see a super appreciable difference. Either way, this higher stack is within a cm of before I replaced the original Felt DA spline stem. Replacing it and using the Aeria Ultimate stem, I dropped the front end a solid 1" to 1.25". So, adding that sack spacers back gets me where I was before.

https://www.youtube.com/...amp;feature=youtu.be

Video 2: lower stack
Doesn't look a ton lower and I simply can't make any power here. I don't know if I am reach some limitation on my body there or what, but it makes a difference. Super short video, just wasn't that interested in this setup.

https://www.youtube.com/...amp;feature=youtu.be


I could probably mess with the 5cm in the saddle and extensions a hair. Otherwise I am pretty happy.