Ok. So I'm ready to pull my hair out. 97 mariner 60. I have been chasing a odd miss. It is not a dead miss but it pops and spits and no power. It's the middle cylinder. All 3 have 130lbs compression. All carbs good. I swapped coils and issue stays on no 2 cyl. I tested spark and it is present as will jump a 7/16 gap with ease. I am out of ideas unless it's the switch box or trigger coil.