Crap John... I was really thinking it was the CPS. I know you said the joints look good on the RCM, but do me a favor and look at the relay's and those flat leads for burn marks. Maybe pictures of everything if you can.

Is it possible the gap is way off on the new plugs?

It's a PITA but I would switch the plugs back after I checked the RCM thoroughly. My occassional hot misfire's with the v6 were my RCM.