HI again.
Can I ask - what is the most common controller used with MyVolumio? A Tablet like iPad or an iPhone / Smart phone?
I use an iPhone 6 as this is what is usually lying around. I set up my volume control to have 100 steps of 1 click and a default maximum startup volume of 10.
The volume control appears on the left hand side of the screen and pops up into a slider when I touch on the volume icon. I can increase the volume a click at a time by tapping, but only up to 31. Then it stops - like an unresponsive touch screen. It will also go back down to zero volume.
If I touch the slider control, I can increase and decrease the volume up above 31 and back down - it works fine, but is very sensitive and my system is very loud. 
I like to make accurate and small adjustments to volume.
Can anyone suggest what may be happening here?
Ultimately it is my intension to rip off the Pi in a Nespresso Cube idea on the site home page and use a volume pot.
Cheers - Chris.