It's been awhile, but here are the things I remember.
If you've got a heater on the fender, its inconvenient. I should have just pulled the heater out for the install.
Drilling the hole in the frame rail sucked, spend the money for a really good metal cutting hole saw.
The little black plastic regulators are junk and fail in a way that vents your air down to where-ever the protection valve is set. Later sets didn't include it, If your set has it, don't install it.
Since your assembly has been sitting for a while, valve and seals in the drag link sensor (un-repairable and un-available) and the air cylinder (repairable) may be sticky. Exercise the system with the front wheels up in the air, maybe with a little extra air tool oil in the ports, to free things up.
At idle, like in a tight parking situation, it uses air faster then the compressor can keep up.
Overall though it was one of the best improvements I've done.
Thread about installs-
I installed one of the air o matic kits from BrianrBull this weekend. It took me about 7 hours. It could be done faster if you wanted to do some of it again later. I took a bunch of pictures, and here they are. This first batch is just the deuce with the wheels off. There is also a picture...
www.steelsoldiers.com
Sounds like you have them but here are the install docs-
Air-O-Matic Air Assist Steering Instructions Scanned Blue Prints 12132493 & 12430289 Here are the scanned blue prints and installation instructions for the Air-O-Matic air assist steering. Special Thanks to DavisM38 as he mailed the prints to me so I could scan them and post them here for all...
www.steelsoldiers.com