Emu XL-7 & MP-7 User's Group

Hello.  Got a Composer Rom from EMU recently and it seems that the 
actual Volume levels for different Presets are radically different - 
some seem appropriately "loud" while others seem barely audible when 
trying to play/record them into a pattern. Is this the way the ROM is 
supposed to work? I have tried reseating the ROM. (Sorry, I really 
don't know much about ROMs and sampling.)  Also, is there a list 
anywhere with all the actual sounds and their locations?  I'm having 
some problems navigating this ROM (Protean Drum is the only other one 
I have), not that I'm doing very well with many of the other 
features, either, but I'd appreciate some help with this particular 
problem, if possible. (Then we move on to the strange flicker in the 
display and the shifting pattern presets, but enough for now.)  
Thanks, Ken