RE: Leopard2a6 no worky w/ DX6i
If you want a quick and nasty way of ensuring that your guns fire, during the set up process, move your elevator and aileron channels to half of their full travel. That fools the DMD into setting that as the extent. Once you're done with the setting up, pushing the stick to the actual physical limit will then give you your guns. You do have take note to use half-travel to traverse your turret though.