HELP. Pressing Ball Joints Back In (Pictures added)

When I press the ball joints back in on my tie rods, control arms arms, and everything else is there an audible pop? I am using the loan a tool press/clamp contraption from Autozone. How much should I torque the clamp down on the ball joint to press it in? I did a couple ball joints, and they fell out later when I was working on another, so obviously I didn't torque those enough. Any help would be appreciated!

Andrew

Update: I am not crying. :) So I am pretty sure this is a case of my mistaken terminology, and a migrane! My ball joints are threaded, and already threaded on, I am talking about the other end of that ball joint with the castle nut, that connects to the spindle. Basically I am talking about all the parts where there are castle nuts. Those are pressed in correct? Such as the following: