Finally got some time to work on the beast today.
First, I fixed two very small air leaks on the CTIS controller inside the cab on the bulkhead next to the transmission shifter column (one was the black box (pressure sensor) with the electrical connector on it that is next to the two air lines of which the 2nd leak was on one of them).
Next I bumped the fuel rate at the top screw by 3 turns and tightened the governor springs 4 clicks but I think I'm going to back them off a click or two as it's now idling at 850rpm but it will now rev to 2650rpm when parked. I'll take it for a drive tomorrow and see how it performs under load.
On the agenda for tomorrow, I plan on jacking up the front end and testing to see if the transfer case/front axle plumbing is correct (I think it is but want to make sure) and if not correct I figure I will just plumb the dash front axle switch directly to the transfer case front Axle Engagement Air Cylinder which is on the back side of the transfer case (next to the parking brake cable's lever) and totally get rid of the auto-engagement switch