I am new to this and need help. I have a 1995 Nissan Pickup and I am leaking transmission fluid. This is not the first time this has happen. The first 2 times I thought it was the front seal and had it replaced both times. It stop leaking for about 7 months and started back. This time I replaced the seal again but didn't stop leak. The leak appears as if its coming from between the motor and tranny. Once I turn the truck off tranny still leaks for about 2-5 min. Any ideas on what could be going on