Thank you both for clarifying.
I look forward to what RBBailey reports back as the solution. I wish I had more personally to offer on the topic.
There's really nothing else to offer until tests are performed. Hydraulic disc brakes are relatively simple.
We know what the causes can be; it's just a matter of finding out which one is in play, or how many are in play. Typically, when so much is removed and reinstalled, you've got air in the system somewhere, even if you can't imagine how it got in there; but that's not necessarily the case.
Nobody can know what the problem is until that's been fully explored. It's a pain in the ass, but that's an important variable to eliminate.
Cheers,
Kennith