If the CSUAC folder and catalogue structure follows the same convention as the Profantasy ones, the folder containing the png should be in the same parent folder as the catalogue, and may even bear the same name.

Alternatively, if you open the Symbol Manager and pick the symbol you want to find the png for, then hit the List button, it should give you the location and filename of the png on the 9th line.

However, the problem has been swishing around my mind for a few minutes...

Have you tried editing the symbol through the Symbol Manager and bringing the text to the front?

Oh wait a minute! Are you using the actual symbol instead of the png the symbol is created from? You might need to import the png, then make the symbol with that non-symbolised png image.

They're just sheet effects.

It's not too difficult to add a third of your own, though I'm going to stop at 2 for the template or it just gets a bit too heavy to explain everything in what is supposed to be a brief mapping guide.

It depends what season you see it in.

You could group or multipoly them.