What exactly are you looking for, the right presets, tips about parameters or ?
It seems to me that the factory presets in the 8300 V2.0146 are not enough to satisfy you.
I couldnt say that they are bad.
Just try the "bass punch" presets and tune it by yourself, couldnt be so difficult shouldnt?
If you want to slow down, just gain the parameters agcdrive and multiband drive less.
Please be more exactly with your question.