Leaking Tranny Fluid

I worked on it this morning. I started it and warmed it up. I adjusted the idle to 800 and checked the timing. It is 4 degrees ATDC at idle. I shifted it through all the gears then put it neutral to check the tranny fluid. It was right on the full line. Maybe it was just overfilled. I had this truck for two years, so it has been overfilled at least that long. Now to take it for a ride and hope I have the lockdown adjusted correctly.