Found the GJ. BLM office and they were closed due to Columbus Day, however, out front was some nice maps of the local trail systems including the 4x4 areas and some info on the trails but not as detailed as the various website maps and or trail books. But it was a start anyway.
Unfortunatley, I started hearing a bump under the XJ whenever I hit a pot hole. Gonna have to check that out before I hit any trails. Checked for the basics: shocks were tight, TC bracket/tranny mount were snug, nothing loose that I could move by hand or with a 18 in prybar anyway. Hummm?