Edit stat weights?

[simpleminded24]

So I was trying to find a way to add in the stat weights for a lot of the items that drop with Elemental Skill modifiers, or general Skill modifiers. Looked like there was a section in each of the weight xml files, but it was commented out. I just want to know where I might add something like:

      <ItemRule itemBaseType="Armor" description="High Skill Modifier Armor">
        <StatRules>
          <Rule stat="Quality" value="Magic1" />
          <Rule stat="FireDamagePercent" minValue="10" />
        </StatRules>
      </ItemRule>

Just need to make sure I'm adding enough rules, in the correct places, so I can judge later if I want to keep any Elemental or Skill mod armor. I looked over the "Item Rules 2" thread, and I didn't want to have to start from what appeared to be scratch, but just slightly modify the current rule set. Any suggestions and/or help is much appreciated!

Edit: I realize the code above doesn't actually set the weight, I'm just using that as part of the example. I really just need to know which files I'll need to edit!