Regarding the scalloped headset wrenches, I assume everyone knows that the adjustable cup & the lock nut must be separated by a keyed washer whose thickness exceeds that of the wrench applied to the adjustable cup. Otherwise you will not be able to remove the wrench from the adjustable cup---an embarassing discovery I made when first installing said headset with the dedicated wrenches. Yet another "great idea" that turned out to be not quite so.
Nor Meyer in Mt. Vernon, IA