I have used Jackson DK2S, MIJ, year 2007 now for about a year and the problem is, it eats 9V battery like candies. I mean, the sustainiac function stop functioning in about 2-3 days after i change the battery.. Anyone have a Sustainiac in a guitar and is it possible that is something wrong with wiring? I am already thinking about replacing the sustainiac pickup with some Lil 59 and have an additional neck humbucker pickup for extra versatility, i found out that i don't use that sustainiac function that often.