Is there just no traffic, or are you missing replies? If skywatch can hear it on Baker Peak, there should be traffic on the Lawton site (probably the "Home" site for LPD).
Lawton should be set up as "standard" or "normal" not "splinter". Make sure you're using "Control Channel only" - as long as the scanner gets a data channel, it should track any monitor-able talkgroup activity.
Maybe try programming a new system from scratch and seeing if it works...
What type of scanner are you using? Perhaps someone can help provide instructions or a file for you to load.