@JulianDracos Sorry - I meant your FCW of the map you are having problems with.

30 minute shout :)

Should the top end of a carnivorous root be blunt and black in section like a pillar, fade out, or something else?

You seem to be getting on really well. They are easy to read and attractive :)

I think those use the symbols in area, in which case they are affected by the default symbol size in the map.

Unfortunately, changing the default symbol scale won't change the existing forests you've drawn. It will only affect the new ones, so you may have to backtrack and redo the existing ones. Here I drew one jungle at the default symbol scale for this map on the left, then doubled the default symbol scale and drew the forest on the right.

You get to the default symbol scale setting by clicking the Drawing Properties button |CC2PRESETS|

Changing the default symbol scale will also change the default symbol scale for all the other symbols you place after changing it.