I have just acquired an Ev2 mk4 and the power is a bit on the low side(720) . I would like to remove the anti tamper on the power adjuster, which I am guessing is the small cover on the left side near the breech. What is the best method to do this? My first thought was to cut a slot for a flat bladed screw driver with a dremel type tool, but it looks at an awkward angle. Any tips before I tackle this task.