EXS 24 Logic Sampler Users Group

Hey I have a song I'm working on, and until recently for the drums I was just arranging all 
the kicks, snares, etc. in seperate intruments and then just opening like 5 instances of ESX 
and cabling them all to one instrument.  This works fine... but it gets confusing, so i 
decided to just combine everything into one instrument and route the different samples to 
Aux' and then EQing everything seperately in the Aux chanel.  However when I tried that, 
the sound got all garbled up.  Especially if other virtual instruments were playing.  I know 
its not an issue of CPU power.  I have a Dual G5.  Plus I can just play everything seperatly 
and have 6 or more EXS' running at the same time and route all over the place with now 
problems.  Can anyone help me out?

Specs:
2.0GHz G5
Panther
Logic 6.3.3
Just using the bult-in Audio (until the G5's firewire grounding problem gets resolved).