Sharpening default settings

Hi,
I'm using C1 (v6.3) and am trying to figure out how to change the default setting for sharpening in C1.

Currently it's set to be Amt 180, Rad 0.8, Thresh 1; I want the Amt to be 100, and keep that as default. There's a triangle above the sharpening box in the focus tool with "Save as defaults" but it doesn't seem to save the settings as defaults.

I know I can save a preset for this, but is it possible to have it as a default (what does the triangle do?)

Thanks for any help,
Alan.