Adjusting a Sterring Gear Box

[bigd65]

Hpw do you PROPERLY adjust the steering gear box. I just replaced mine (with a WRECKING YARD MODEL) , mine was leaking. Anyway, everytime I try to adjust them, I make it start leaking at the input shaft. I guess I get it to tight. I dont want this one to leak or my wife wont let me park in our NEW DRIVEWAY. The one I put on has to much play. All the tie rods and pitman arm and all are good, I replaced them about a year ago. The old one didnt have this play in it so i know its in the gear box.