I've got a couple of these little mods and both have the same problem. They continue to fire after the button is released. When it happens the display changes to the power on/off and keeps firing until the unit restarts (presumably after the 15 second cut off?). I can only think that the mod is registering 3 presses when I fire which triggers the screen change, and there is a bug which stops the release of the fire button registering. Anyone experienced this? Any fix? I'm surprised it's happening with two units so it must be happening to someone else!