Tranny leak

My 86 5.0/AOD bird, I can't park it on concrete because when I do a puddle of ATF develops underneath. I've serviced the trans (filter and gasket). Are there any common areas these trannys develop leaks? This is my first fox body bird, and AOD, so I'm stumped. Any help would be greatly appreciated.

Did it leak before you serviced it? Front and rear seals, cooling lines are the most common on any tranny. Time to power wash underneath the car and then determine where the leak is coming from.

Yeah, it leaked before I serviced it which is why I did it.