How do I change critical damage?

Questions
1

Crit damage is normal damage x3 in vanilla FE8. How can I change so that it’s normal dmg x2 instead? I’ve looked around in FEBuilder but there doesn’t seem to be an option for this.

2

You would need to do some ASM.

3

ASM is about code manipulation and whatnot, right? I have zero idea about that… Can’t you tell me what values I need to change and where?

4

I think you should look at SNES crits for GBA by Colorz, it might give you a clue