Each coil has 3 wires. Two regular 12 or 14 gauge wires and a high tension lead. If you swap the 3 wires on one coil with the 3 on the other coil and vice versa, take note to see if your misfiring condition changes sides. If so, you have just confirmed that a coil is bad. I can't see how this will help since you stated that both plugs fire.
Have you actually taken both plugs out of the engine, hooked them up to the high tension leads, placed them firmly against the engine and tried to turn it over to actually see spark at the electrode?
