you need to play with the settings in the mod.
what mod did you get? and what trigger are you using?

i used Ddrum triggers and a Alesis D5 mod for years. its a fine compromise between the gain, noise, decay and a few other settings i cant think of right now.
essentially, you need to teach the mod exactly what each bass hit feels like. a few cheats would be loosening off the bass head JUST ALITTLE to stop any extended reverberation of the head.
but its defenetly all in the settings.