A-ha! Thanks man,
Now I understand what you were talking about. With the mechanics I know around here, it wouldn't surprise me if they had drained and refilled with the same old fluid at the time of the rebuild. That thought never came to my mind until know that you mentioned about the pan.
Well I guess the only thing remaining will be to drive it until it stops! Just like you said

.
I really appreciate your time and help buddy, when it comes to transmissions I'm in the dark

. I will surely post anything that could come up (I hope not) in the future.
Best regards,
Oscar.