FYI, i loved the Japanese-accented commentary in "Cooking with Dog" + the blurb on making your own white bean paste from scratch. I laughed when someone commented "I wish people worked like white beans. 'Soak in water overnight until wrinkles are gone! :D'"
Overall, the batter did give taiyaki that held its shape mostly (deflated a bit), so I'll stick with this as a primary for further tweaking.