Trying to find an oil Leak

Hey guys, i've been dealing with the most annoying oil leak this season on my '04. I've cleaned and taken the bike apart about 10 times trying to see where this oil is coming from with no luck. I find most of the oil in the following places:

-The electrical plugs on the left side under the tank, as in the group of wires near #1 in this pic:


-On my regulator/rectifier...yea wtf
-On the thin flexible heat shield near the crankcase breather.
-On my overflow tubes that come down the left side of the bike

What do you guys think?? I've already tried replacing the crankcase breather gasket, made sure all the rubber hoses were secure. Where can oil be leaking just under the tank?

clean it as best as you can.

use baby powder on cold engine. ride for a bit, check where wet spot is in baby powder.