Another Question on Registration Volumes

[HarleyRider]

I save all the songs I arrange as registration banks.  Most of these songs have 5 or more registration buttons, different voices and multipad settings.  I try to maintain the same overall volume of my songs by always placing the KB volume knob in the same place.  Unfortunately from time to time I select a song registration only to realize that this song is noticeably louder (or quieter) than others.  So, I reach up and set the volume control to compensate, and forgetting to restore the volume knob to its correct position for the next song.

To reset the volume of the offending song, I can go into each registration button and rearrange all the various settings to lower or increase the volume, but this is time consuming and I often make mistakes before I get things correct.  Is there a way to increase or decrease an entire registration digitally in a manner that can be saved within the registration?