Excdroprate not working?

i realize this problem has been addressed many times blah blah
but none of the threads had solutions.

I change the Exc drop rate in MMT_Items.txt
Nothing happens.. i tried low values and high values. Nothing.
Using Season 2 MMT Files
https://gyazo.com/b7a7cb9f2d831901c5d3b83fdd3a09fb