Ax3000g - a few questions

[Tyrant-Zero]

I just have a few quick questions regarding the use of the Ax3000g.

I have read the manual a few times and I can't seem to find the answers I need.

I want to use the pedal through my tube amp so I have it in the AP3 setting. I want to use it in individual mode and use the expression pedal as a volume pedal to give me a solo boost. I have the control pedal set to volume and the minimum to 50 and maximum to 70, just to give me a bit of a boost when I push it down. but it seems that when the pedal is fully back it's lacking in gain a bit and when I push it down it just adds more gain and not really any volume.

Also, is there a way to access the tuner straight from individual mode?

[longi]

You have the expression controller set to gain instead of volume.