Hi!
Try this..........
--Press "Menu" button and select "Preferences".
--Select "Mixer"
It may say "JUMP" or "CATCH"
--change it to "REAL" and hit OK.
This will tell the 2488 that the internal faders and physical faders are identical.
Make sure that all physical faders are full down.
--Save this as a scene (if you'd like me to describe this, I'd be happy to).
--Go back and return your mixer preference to its previous setting ("JUMP" or "CATCH")
-- Before touching a fader, check your physical vs internal faders; they SHOULD be the same as one another.
--If all goes well, you can always load this scene to reset everything to zero.
Let me know if this solves your problem!
Thanks!
Ken