I have Fluid R3 Mono-GM.sf3 and Handbells.sf2 displayed in the Synthesizer Window. The custom Handbells sound is much better than the Tinker Bell sound available in the GM collection.
When I open the Mixer and assign the Handbells sound to the appropriate staff, it also gets assigned to the piano staff, even though the latter shows Yamaha Grand Piano from the GM collection.
I cannot seem to get the two different soundfonts to work together. It appears to be one or the other.
Am I doing something silly?