Matt, thanks for your patience – and sorry for the lag in replying.
I will take it up and evaluate ways of making muting note bound, as opposed to program change bound. Since keyboards don’t usually have more than 88 keys, one solution would be to assign channels to each bank (e.g. 1-9) and then use the appropriate octave keys (labeling on the top) to select the page to be toggled.
Let me know what you think – anyone ??