The Hoji Pro is one beefy boot. Strap in, tighten the upper buckles, and most tour skiers will never say, “This thing it too soft.”
On the other hand… there are among our vast cadre of aficionados who like the design and fit of the Pro, yet would prefer a few more degrees of cuff lean angle, or a softened forward flex. Here’s a few mods that’ll get you there. Caveats: Neither mod is reversible. The lean mod will get you at most about three degrees. The softening mod has a radical effect on both the softness and progressive flex. I recommend for smaller, less aggressive skiers who are certain the boot is too stiff. Wear an N95 mask while grinding the carbon infused plastic. This mod’s overall WildSnow difficulty rating and specialized tool needs: nine out of ten screwdrivers.
Next, the WAY to soften the flex. (This might be the mod that’s never done. It was a fun experiment and I hope some of you find it interesting. I don’t mind how it feels, yet I wouldn’t ski big skis nor get aggressive, for fear the boot will collapse forward. As mentioned above, smaller, less aggressive skiers might like this — though remember it’s not reversible.)
Said again: The lean mod is minor. Removing the cuff flex stops is major. Neither mod is reversible.
Reminder: One reason the Hoji boots have a nice flex in their stock form is that the cuff pivots are not offset in height above the sole, as with most other touring boots. Instead, they’re evenly located on the same left-right axis. This makes the boot even softer when the cuff stops are removed. Keep that in mind.