ignition failure

[spike]

My bike started acting up last week, it would misfire at high rpm under load, I tought I had a bad plug cause the right plug was wet and the right was nice and dry.I didnt have any spares so I changed that plug during the week and went back this weekend. same problem but now it start earlier in the powerband and the bike is harder to start. my first guess was cdi went bad but i then I thought about the wet left plus and if it was the cdi wouldn't it be a both sides problem? so I took the coil off today and took the plug caps off off it. on the left one the threads that screw in the wire was all rusted the right one's good. so i cutted about 1/4" off the wires brushed the plug cap and all the coil connectors. I'l put it on tomorow and take it for a spin. is there anything else I should check before I go? a bad coil might have caused it too? anybody as something like that appened? I might have to change the plug caps, we'll see. any idea would be appreciated since the bike is in ice racing mode and i hate to take my studded rubber on anything else than a frozen lake :ermm: