I finally found it yesterday.
indeed for the problem N°1 it is in:
-"Page Attack Periscope.ini",
-"Page obs periscope.ini"
-"Page UZO.ini".
for the 2nd point it is in:
-"Subsystems.ini page"
I had a lot of trouble figuring out how to do it, and finally I just changed the color, to match the background. Nothing was removed just the color of the text changed. I used the same method for the 2 points. I haven't had time to do point 3 yet or the stopwatch problem.
Now :