[LAU] getting volume just right across soundfonts

Howdy folks, I am in need of wisdom: I have a dozen or so soundfonts I play in a live performance situation, each with their own average, max, and min dbs. I need to normalize each of these soundfonts to an average gain and similar range, so that I don't get hit in the head by a beer at my next show. Any tools out there that'll let me do this? I am playing through qsynth/fluidsynth and have a master gain but nothing (afaics) that allows me to give a preset gain with each patch -- so I need to (i think) unpack and re-build each soundfont with a goal volume range in mind, then use the master gain in qsynth to bring me up to a normal volume with bristol (which I also use, and is independently adjustable). Any advice is appreciated. Thanks, Luke ----- Luke Peterson