I usually play with lowered settings for resources, relics etc.  But there are events adding those. Can those fire several times in one playthrough? At least that's my impression.

Generally, I'd like to keep those events (esp. since they include ideology choices), but a bit toned down so that they either give less new resources and /or occur less often. Because I don't like it when at some point everyone just swims in stuff, even when I set them to uncommon.

ResourceGlut_MegaEventDefs has this part:

    <MegaEvent>
    <InternalName>ResourceGlut</InternalName>
    <Weight>25</Weight>

    <Prerequ>
      <Turns>150</Turns>
    </Prerequ>

Turns seems pretty straightforward - minimum number required for this to happen? Or does it mean it fires every 150 turns?

What does the "weight" part mean - does it control how often this triggger would fire? Could I just lower it to to have it firing less often (if it does indeed fire more than once)?

Then the actual trigger for this is in ResourceGlut_ScenarioTriggerSetDefs, with parts like:

        <PerformAction>
          <Action>ConvertAsteroidsToDurantiumProportional</Action>
          <ValueParam>0.25</ValueParam>
        </PerformAction>
        <PerformAction>
          <Action>ConvertDeadPlanetToThuliumProportional</Action>
          <ValueParam>1</ValueParam>

I understand I need to change ValueParam - but which is acutally giving less resources, a higher value like 1 or the lower ones like 0.XX?

There are similar sets of XMLs for anomalies, relics so I'd like to understand how these work to change them