I just bought a 2003 16' Lund rebel SS Fishing boat. It has a 2 stroke oil injected 50hp Johnson motor. I made sure the oil was topped up in the leg (filled from bottom). I hooked up the water and gas and I ran it in my driveway for 10-15 min to get the fog out because it hasnt been in the water since it was winterized. After I ran it, and it sat for a while I noticed oil leaking from the prop. Any suggestions to what this might be? I called a boat repair shop and he thinks it might be due to the exhaust for some reason. I am new with boats and am looking to master the art.. Any help would be great!