So with 1.7 I could go to the About display, select Usage, enter a channel, and then step using Next/Last to see the maximum intensity for each channel (looking for zero, in my case). Now with 1.9 I have to hit "Refresh Usage" after hitting Next/Last! How is this a good idea? It seems to me that if the Usage tab is highlighted a "Refresh" is implied when you change channels. Do you really want the user to now move their hand repeatedly from keypad to touch screen?