Replaced filter and gasket on aod tranny. Added fluid and now have leak at rear seal. I then replaced the seal and still have the leak? What am I missing? I know the fluid!

 

The element below the pcv valve is known to plug and cause lower engine leaks. I have $5 that says it is the oil pan gasket leaking. Fix that screen under the pcv first, but the oiplan gasket will need to be done as well. It actually can be done in the vehicle, but it sucks.
Alan