So here's the deal, got the car running good. Went for a test drive the other day, and it started smoking. Filling the cab smoking, but it smelled like some kind of oil burning off the exhaust. It didn't take me long to figure out it was tranny oil. I let it cool down before getting under there again next to the exhaust. Come to find out, it was leaking out of the cooler lines. You guys know the hard lines that run to the radiator. I used the same ones that were on the old th350 since they screwed right in. Looks like there was and adapter for it already in the transmission. They were tight, but I disconnected them and reconnected them. They stopped leaking for a bit, but started again after driving for a few minutes, although not as bad this time. It appears to be leaking from around the hard line, not the threads. My question, is there supposed to be an o-ring of some sort in there? There isn't now, and I'm thinking of adding one to see if it helps. I guess I just wanted a second opinion.