How to increase drop chances for elite base items?

[AirSORC]

I am very new to mod making and am interested in making a mod that only increases the chances of elite base items? How would I do this? Also, I use the D2RMM (Diablo 2 R Mod Manager) where you can have multiple mods active at the same time with only using the -mod D2RMM -txt extension. Is this possible?

[Unicarn]

To increase the drop chances for elite base items, you would have to go into TreasureClassEx.txt and change the treasure classes that drop elite base items so that they are less likely to downgrade to the next-lower treasure class (e.g. change the weight for "Act 5 (H) Bow C" to pick "Act 5 (H) Bow B" from 1655 to a number like 828 for about half the chance of a lower-quality base item being chosen. You'd have to do this for a lot of treasure classes.