Diamo,
I spent a good amount of time reamping your (original) DI and came to the same conclusions MonkeyMan did - it was extremely challenging to dial in a good dirty sound, largely due to the extraordinary bassiness of your (single coil middle, really?) pickup. Try again on the bridge and make sure your tone control is full up. Even as a Saber collector I've never heard anything quite like that! This is a problem that has to be addressed at the source
(P.S. I run the "Ibanez S Series Worldwide" group on Facebook, so I'm very very familiar with these guitars)