I had to pull the coils off my bike (amoung other things) to replace the valve cover gasket (factory one was improperly installed). When I put it back together it had a weird miss. I checked everything and couldn't figure out what was wrong. I hooked it up to tuneecu and did a scan, it found that the front most ignition coil had a miss. I pulled the plug wires out of it and cleaned/dielectric greased as previously mentioned, and cleaned the power/cround terminals/plugs. Started it up and it ran fine.
I don't remember if I had a check engine light (or even if the rocket has one) but the tuneECU told me what was wrong. It might be worth it to use it to take a peak if it finds anything.