On my CP ASA you can change the depth of the pin inside the ASA by screwing it in or out of the on/off knob assembly and locking it with teflon or Loctite.
If that doesn't work, you should be able to grind or file down the pin (I've had to do this twice on different ASAs).
If you don't want to grind it or cannot adjust it, I'd recommend sending it back to CP, as it's not an issue with your tank.
CSU Rams Paintball
Rocking drop-forwards like they're going out of style...oh, wait...