Finally after 4 yrs.I got the 306A running & oil leak free! I bought a used oil tank on feebay & put it on yesterday.All I had to do was put oil in today,right?Wrong! As fast as I put oil in it came pouring out.Needless to say I was pissed.I ended up replacing the "exhaust valve" (oil discharge valve) & also found that the long screw that goes in the front of the tank was missing.I took the long screw out of the original tank & put it in the newer tank.Between the two it stopped leaking.Next was to put the clutch back on.To make a long story short,I lost the small thrust washer that goes behind the large thrust washer/plate right behind the clutch.I found a washer that fit the crank,but the chain keeps running at idle.After getting that taken care of,I put the bar & chain on &12 puills later it was running again.I'd replaced the FW side crank seal about 2 1/2 yrs.ago & thought I was done then,but the oil leak issue popped up.Some people like to put fear into another man & I was told that however I took the oiler apart,it had to be put back together the way it came apart.Duh,no kidding.That's what deterred me from getting the saw fixed sooner.There's no big deal with taking the oil tank off & apart.Apparently there's a hairline crack in the original tank,still good for parts though.Here are a couple pics of the saw.