Quick Update:
Dextron III is in, pump works fine, slide alignment was a bit squirley because no doubt the lines still have some air, but went all the way out, and wife is happy. (We had enough extra room and incentive to put up the Christmas tree and the electric trolley that runs repeatedly back and forth across the dash.)
Next I need to disconnect and cap off the lines serving the jacks, at the jacks. My plan at that point is to remove the jacks, or at least secure them in a retracted position so they don't interfere with the suspension. Will do that before the next leg of our full-time journey.
Any idea on which cap fittings and size this will require?Thanks guys for all the help!!!!! 
Gerald, I did find another solenoid/valve. It was mounted to the rear side of the plastic battery tray enclosure. It had two hoses connected and 12 volt power. This might be the one for the main slide. I traced the hoses back to the vicinity of the main pump above the reservoir which was about three feet away. Hope this helps.
