Hi. Please take a look at my revisions. I took #56 and turned the symbol into an SC on #112 & #114.
As for turning the symbol on #57 into an SC, nothing worked. So I split it into two color blocks (as you can see on #111), making the green part the top part of a "C" and completing the "S" with the lower part.
If you have any more questions or comments, please let me know.
Best,
-Ted