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

hi,

i am new to this group.
can someone please tell me where i can find the FAQ?
also, does anyone know a way to eliminate all the line noise i am 
hearing on my XL-7? before i was perfect sounding as far the sound 
coming out of the main left out jack, then i took it apart so that i 
could make some minor modifacations to my master pot(it shortend it a 
little so that it doesn't stick out so far), now there is this 
terrible hum...


-brian