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UPDATE!!!!

Took the outside wheel off and accessing the height control valve was a breeze

Took the old one off, swapped the arm to the new one, put the appropriate compression fittings on with all brass dot hose and fittings.  No more push connects (on this at least)

I figured out which port was in by turning on the aux compressor.  Used the one that had air coming out as “in” C1 went to the bag, C2 was plugged, bottom is open for “exhaust”

Fired it up and I’m back in business. I bought a spare as a back up so I can keep it with me for next time.

Nice work Dennis, glad you got it sorted.