Now this is really weird....
I changed the seat to a Fi'zi'k Aliante (really comfortable BTW) after a recommendation by my LBS racing Guru. Went for a 25 mile ride and after about 5 miles the click was back. Not the same though, this time it would occur only when my right pedal was in the 6:00 position. It occured both in and out of the saddle.
So now I am getting really neurotic, can't sleep, can't eat, can't work. So I leave the office early (I'm the boss, so I told everyone I had a meeting to go to). Get home and remove the new seat and post, inspect, tighten, and reinstall. Test ride and still making that annoying clicking noise. Take the wheels off, lube the drop outs, reinstall wheel; take the bike for a spin....noise is still there.
Now I am getting [censored]. Load the bike in the truck and rush over to the LBS, which isn't all that local. Damn, the door is locked and the sign says "Sorry, gone riding". Load the bike up and head home. The sun is setting and my wife tells me I am becomimg compulsive. What does she know, I will show her compulsive.
She insists that I stop for dinner. Chicken Parmigana....my favorite after ride meal! Feel better but still annoyed.
Go back into the my bike room, grab the torque wrench and tighted the stem screws, handlebar screws, and head bolt. Take bike out for a quick 2 miler.....the sound of a well lubed and click free DuraAce gruppo never sounded so nice.
I have read of others getting clicks after a few miles. I think this is because we tend go easy for a mile or two and them when warmed up we begin to push it. That is when we put greater force on the components and loose or intermittent movements take place.
Tonight I will sleep soundly and the machine sits in the bike room waiting for it's next ride.