Problem during installation of Rockshox Reverb Stealth product
@alex was right in advising not to use tools where no tools are needed. Similarly, it is easy to run frame BBs or brankarm threads by forcing the thread with a wrench, instead of by hand.

Somehow, I had made the hose hard to unscrew by overtightening 2. I loosened it up, held it with a wrench and rotated the hose by hand. This solved the problem.