Transmission is leaving from inside the bell housing, Just put a J/Y transmission in it last week.

When I put the torque it bottomed out and the ribs on the converter rubbed the bell housing. I was told that it would stop doing that when the tranny was full. It didnt. And I lost all the tranny fluid from somewhere inside the bell housing. I just finished pulling the tranny and putting another new seal in it and the original torque Converter and I get the same result fluid is pouring out when running. Some one just suggested that the shaft is to short and thats why the converter was rubbing and why it wont hold pressure. Please advise. Ive pulled this tranny out twice and put it back in on the ground in my driveway and I am about to lose my mind.