I just received a Smoke vv Gripper via trade in the mail today. It is used but looks in good condition. I works on some tanks but wont on others. It works on 1 Vivi nova and wont work on a different Vivi nova. The same for two Cato tanks I have. The tanks that don't work show 9.9 ohms on the gripper's display and don't fire. Any idea what is going on here?
