I've never successfully reconstituted beans, its the one thing I've tried I can't cook. I think my water is too hard, I'll simmer them at low temp for literally days in the crock pot and they don't get soft. I've read Guides, I've seen videos, the beaniverse just said fuck this girl in particular.
I get the canned mixed kidney beans and make chili with them. Back before I went vegetarian I'd cook them with some cross-cut ribs and marrow. Nowadays I use minced mushrooms and seitan