I KNOW the source of the fuel leak. It is between the large nut for gripping the prop, and the bearings behind it.

I'd like to know more about this..
The engine has always done this but recently is a LOT worse.
At first I noticed the dirt inside the cowel after a months flying, now its after a days flying. I'm starting to wonder if the engine is heating up, expanding and loosing compression through there..... or something along those lines.

check back on the photo, you can see the bearings and a blue seal.. it comes from there.. but exactly which part of "there" I cannot say.

This cowel is REALLY dirty, like soaked, after yesterdays flying alone, which was about 5mins in the air and a total of 7-8ish mins run time on the ground.