Full analysis and speculation to follow, but Ramped it and gained 1w from 254w to 255w for the FTP 
Lungs felt good even though I peaked at 183 bpm HR again. Legs felt it most and I took it to 70ish rmp cadence before bailing.
I didn’t have my coach cracking the whip. Did it solo tonight and might have been able to eek out a bit more with that encouragement. But I’m happy considering I usually do worse on my own.
I have the Disaster-Half and a long Zwift Fondo this weekend to test other power and endurance. Obviously it’s a bit early to make any real calls, but I am still optimistic based on this small picture.