Ok, What have I done now... (904 problem?)

yes, plus you have a deep pan, keep adding fluid ,a pint at a time. chalk the wheel and do this in neutral with the car idling until the fluid level no longer stops dropping. running it through the gears in the meantime will ensure you are getting an accurate reading. it can take a while to get these completely full. especially if the converter was pretty much empty. running it low for 10 minutes isnt going to hurt anything. hope this helps...