I recently received a tirade DNA 200 and I've had a few problems wit the chip I believe. When I set the wattage at the desired number, the device will fire while active ... when I set it down and let the device it barely hits a quarter of that wattage and doesn't fire correctly. I've tried multiple sets of batteries and RDAs and the same thing happens, so I plug it back in and update my settings again and it works fine again. It is currently on the newest firmware and the batteries are set to the right watt hours. Its just very frustrating. Any ideas?