Buff Icons Question

Hello all, I have a question related somewhat to Yanfly's Buffs and States Core for RPG Maker MV. Using the plugin, I have changed the default number of possible buffs and debuffs to 3 (up from 2) in increments of 33%. No problem there, but there's something bugging me immensely. By default, whenever a single stage of, say, an attack buff is applied in-game, the affected actor or enemy gets the following icon:

So far so good. 2 stages of the attack buff then gives this icon.

This is also fine, I suppose. Since the base game allows for a maximum of 2 buffs, I get why there are two separate "tiered" icons for 2 stages of a buff. With that said, adding a third stage of a buff with the help of Buffs and States Core does not, by default, change the icon again. It comes as no surprise that the icon remains as:

So my problem is simply that I wish to add a functional set of "3rd tier" icons. Making a new set of icons shouldn't be too hard, as I plan to use Yanfly's Icon Generator as well... But I don't know how to alter the base software to change the icon to my custom 3rd tier icons when a 3rd buff is applied.

Alternatively, if someone knows a way that I could make the program not use separate icons at all, that would be fine too. What I mean by this is one stage of buff could give the icon:

, while the second and third stages of the buff still could give the same icon:

In game the first stage would appear like this:

, while the second and third stages would use the same base icon but with 166% and 199% respectively INSTEAD OF what I currently get:

and

Hopefully what I'm describing is making sense. Any help would be greatly appreciated! Thanks in advance!