All this stroke this stroke that talk and I figured it must be time for a bleed on my xt785 brakes.
Sure did! The juice looked black on the way out.
Anyhow I did a bleed with the free stroke screwed in, out, halfway...I left the levers where they were, I adjusted the levers, I fidgeted and fumbled and...if there is anything we can learn from this, it is that shimano mineral oil is about 5000007% better than dot fluid. My hands are soft and smooth. Brake wise I'm still sceptical about that little screw making any difference.