The hardest part is trying to find some of these stamps in the Scott catalog. Scott tends to depict the entire multi-design pane as a small image. You need a magnifying glass to pick out your stamp from that image.
Yep, modern Japan is the one area where I spend more time looking at the catalog with a magnifying glass than the stamps. There are a few issues I can think of where Scott must shrink the image well over 95%, and even with magnification it's difficult to identify individual stamps.