So coming home from Georgia yesterday we developed an oil leak on the left side of the motor. It is not visible anywhere above or around the jugs. The motor, trans, and primary are all untouched. It appears to be coming from behind the primary about even with the primary drain plug. At first I though it was primary fluid but turns out that I was about a qt and a half low on engine oil. Any ideas where this leak is coming from? Its a 96" twin cam. It is not transmission fluid. This was dirty black fluid. I pulled the derby cover off and the oil was at the level it should be.