Hey guy's, I finished the seafoam soak on my carbs, and got it running again and it seems the left side carbs are putting fuel into the cyl. now, running much better. I want to get new plugs, it has ngk DPR8EA-9 plugs in it now. I want to put in the best plugs there are, and I want to know what is meant by a hotter plug, and a colder plug. Are they for different weather conditions, like cold weather climate and hot weather climate? or do they stand for a hotter spark to burn the fuel better? And those plugs with the multiple contacts over the tip, do they make them for bikes? and if they do has anyone tried them? are they worth anything? And do they make higher output coils for wing's,? like acell super coils? If so do they make a noticible difference? Are the Iridium DPR8EIX-9 a good plug?