burning through my coil wire

Its pissing me off and i cant figure it out. The only thing i can think of is that i need new plug caps. Btw i just broke in my new top end. Runs great with new ada head although now its all cavitation and no grab so now im talking to dave at impros and im getting an impeller hopefully thats gonna help my bottom end. Anyway right now i cant figure out why i keep having to clean off top of the plugs where the caps are connected and i keep frying the ends of my coil wires. It literally happens about every tank of fuel.
 
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