Hi Lee,
Sometimes I had to use the "style unlocker" from Jørgen Sørensen to edit locked parts of preset styles on my psr.
http://www.jososoft.dk/yamaha/software/stun/index.htmI guess it will work for Genos too.
You can adjust each single note's velocity in the "edit tab"
(I don't know if in Genos is called with another name)
Of course you will have to save the changes to a new "user" style.
But editing the part's voices from the Mixing Console wouldn't make things easier by saving new user styles as you wish?
Editing all basses or voices to lvl 60 I don't think that will make them sound equal at all as you said but you have to adjust them with your ear to sound equal.
Make some styles and then move from style to style to see if the styles sound equal as much as possible.
I wouldn't make all basses for all styles to sound "equal" though.
It depends on the song,the other parts of the style and the right & left hand voices.
If there is something from all of them that sounds more loud from the other parts it needs adjusting.
And all of these will sound differently depending on the room you are playing each time.
But there you have to adjust the master EQ just a little I guess as Royce suggested.