Hi Dan,
Instead of having 'selected(${Issue},'Trash_Rack') or selected(${Issue}, 'Debris_Removal') or selected(${Issue},'Woody_Vegetation')' entered for all of the questions, I think you just need to have 'selected(${Issue},'Trash_Rack')' entered for the Trash questions and 'selected(${Issue}, 'Debris_Removal')' entered for the Debris questions etc.
Carmel