ALT Navigation with Tablet issues

Hi- hoping someone might be able to help me with this…

I don’t remember this being an issue in the past, but its been awhile since I used my wacom intuos tablet with Blender. I usually just use a mouse. But lately trying to get into GP.

I generally use the ALT left/middle/right click as my navigation. And I have my pen set up with the two buttons being middle to pan and right click to zoom.

However, while rotate and panning seems to work fine, zooming does not. It just rotates. I’ve double checked I have the wacom buttons set up correctly, and it works fine using a mouse. But for some reason Blender just will not zoom using pen/alt+right click. Any suggestions?