Torque converter noise

So I've check everything over and I think that I have air in the converter, this transmission set-up I know will use 14.5 quarts because I have a buddy with the same set up. Mine also has the aux. cooler on it so I should use more I would think around 15.5 quarts. so far it's only taken 13.5 to 14.0 to get it to read full on the stick anyone have any tips on getting all the air out of the system??????