I originally wanted to create a guard to prevent accidentally changing settings.

V1 has a panel that covers the charge port and the bottom of the settings buttons. allowing access but requires intentional effort.

V2 opens the charge port.

V3 places a guard right under the trigger button

V4 frames the trigger with a circular port

V5 adjusts the retention tabs for a tight fit and has a port on the bottom of the box allowing you to push the box out without pulling on the tank.