Re: Volume difference between digital & analog...
Use the Volume Offset option within the radio. Many systems have different volume levels, so it's not unusual to actually adjust/or fine tune using the Volume Offset, which is a great feature in these radios.
Another option is to use the AGC, however, this is SO POORLY DOCUMENTED and I have no idea if the AGC even works or what good baseline settings may be.
I actually use the Volume Offset in a different way where I actually increase the volume slightly on important/priority channels. This helps me identify a channel when the radio volume is lower, even if I have a channel alert configured, I used the Volume Offset and set it to +1 or +2 so I can hear and pay attention to the specific channel(s) a bit better.