There are 6 nuts holding the head on 4 from above ,but 2 in the bottom dead center front and back that sometimes drip a drop at a time,kind of sounds like your rear one is leaking dripping oil in the area of your starter/clutch/speedo cable.the cure is to remove the nut clean off the oil(solvent) put some high temp silicon around the stud that's sticks down and reinstall the nut.(be careful to torque it 20psi if I recall, it is after all a head bolt).this leak has been seen by a few ,your hardly the first.

Thanks for the reply guys. When you look at the rear of head, just in front of the speedo and clutch cable, there is a cavity in the head that goes all the way through the front. You can look in that cavity from the front as well to see the head rubber plug.
Now shining the light in that cavity from the back further in, you can see the shaft of a bolt that goes from the top part of the head down to the cylinder. This is the area where the oil leakage comes from.
I am not talking about the head nuts that are on the back and the front in the middle of the motor. Those are fine.
It is inside that aware shaped hole or cavity.
I looked inside it from the front, there is a nut on the bottom of the cavity and right above is the infamous rubber plug. But the plug is dry, so it is not coming from here.

The bike is an '06. It has 21,000 miles on it and the only thing ever done to the motor is the extended tensioner plunger. The head nuts/bolts have never been torqued as I didn't see a problem all these years. The bike has been run on Rotella T6 for the past 7 years.
The rubber plug and surrounding area, especially the roof is dry. I paid really close attention to that. I cleaned the are with a pressure washer.
It must be coming from around the exposed bolt shaft.
Everything else around the head cover is dry.
At highway speeds it is the worst.
Looking at the schematic of the bolts, it seems I'm talking about the C25 bolt.

It's under the head cover in the same cavity the head plug is in. The top of the head cover is dry, not running down from it.
After cleaning the area real good it is no doubt that it is not coming from that infamous plug leaking. It is all dry there.
The oil accumulates behind that around that bolt you can see there.
It just builds around it, not running there from somewhere else
When the bike is idling not much happens. It is when out in the road at speed when it accumulates and runs out the back down the cylinder fins.
When stopping and checking then, the area where the rubber Plug us is still dry, nothing running towards the back from there. It almost seems like it is only building around that Bolt and then at Speed gets blown out backwards. It the also spits all over the Starter and the Speedo cable and battery Box.
Id ut possible that it runs down that Bolt shaft from the top, That C25 Bolt has a acorn but it seems from pictures and a copper washer.

I was talking about the Bolt behind that Front one. I looked at pictures where the head Cover was removed, and it is the bolt next to the chain sprocket with the acorn nut on it, inside the head. It is I believe one of the bolts/studs that hold the head to the cylinder.

The nut/bolt on the left between the sprocket and the valve springs.
This one goes through the cavity and the shaft is visible looking into the cavity.

It is coming out of that hole in the head. The head gasket is not leaking.
Looking at the rear of the motor, right next to the carb flange, there is a cavity on the left, and a cavity to the right of it. It accumulates in the one on the right and dripping down right by the bolt that attaches the carb flange. If you take a flashlight and look into that cavity, you can see a silver bolt shaft going vertically. That is where it originates from. And it is not from the rubber head plug, because that area is still dry.