I have went through 2 6al boxs in less than 6 hours running time I have sent one back to msd for repair and have not got it back yet. When I called msd the tech asked if I was running a surge protector, no I am not. Has anyone here ran one? I am running it in a flat bottom and am running an alternator. Everything is bran new and runs great when it runs but I keep frying the box after a couple of hrs. could I be getting a surge from the alt. This msd stuff is pissn me off thinkin about goin to a mag.