Not that difficult until
I just started the dreaded re-do of both masters yesterday.
I ended up using a bungie cord to pull the steering wheel column to the other side of the car and didn't even take it out.
Pulling the cylinders was easy, and all of the nuts on the brake system came off with no problem. The clutch nut is badly deformed, but got an 11mm on its flat sides and had no problem.
I'm thinking I'm half done after about 20 minutes. Yeah, it seems as though the actual replacement of the cylinders is about 20% finished of the job. Because now I see the issue of having to weirdly contort, of the ^%#& other nuts not wanting to screw on--having to hold up the box with one hand, get another hand to put on the screws in such a small space. And the darn bleeder nuts don't simply or easily go back in. Barely able to spin them for 8 revolutions to find I'm making no progress. And they seem to want to default to cross-threading. But even with all this, I thought it would be worse.