Sol,
If your air bleed screw is 2.5 turns out, you have plenty of room to richen it. I usually am at about 1.5 turns out. that reduces the amount of air coming into the pilot circuit and makes it richer when you turn it in.
The oil leak at the head will sometimes happen when you run it really hard and it gets hot.
After it cools down, and you ride normally, it might go stop leaking.