So the other day I replaced my steering box with a Durango box since it was leaking and the steering was sloppy. While doing this I went ahead and replaced the steering box brace. Also the PO had already done the ZJ upgrade(tierod and draglink?) So after replacing everything the steering wheel still has almost 1/4 of a turn of slack, any ideas?

 

Sounds like it wasn't your box that had slop in it. Have you jacked the front end up and turned the wheel back and forth to see if there is play anywhere?