Joe, you haven't been in the hobby long enough to have your glow battery start loosing some of it's juice and surprise you yet. You haven't seen what the weather changes can do to your engines, sometimes they just don't want to start when it gets cold. Sometimes you not only need A starter but A few drops of lighter fluid just to give them A kick. Weather changes can and often will turn your 55 and 120 AX into A beast. Stay in the hobby long enough and you will be walking the line asking to use A driver and starter at some point. In another 20 degrees or so I will be opening up my high ends for the winter flying.