Yes, I have pneumatic lock issues too. Started too look into it and noticed that on the driver's door there is a hole near the latch mechanism for access to an adjustment mechanism (allen wrench). I'm looking more into that before I remove my door panel.

I occassionally have stuck doors, on my 72 SE 4.5. Just a little bit of water that creeps in near the door latches can create rust where a large conical pin on the door inserts to a long conical hole on the body. Once you get the door unlocked, you may have to battle this. Usually a good whack from the inside of the car (yanking from the outside doesn't give you enough force) will free it. Grease and oil work for me to keep it freely moving.

My weather stripping is cracking on some of the sharper corners of the door and is mostly like dry cardboard in other areas causing the water to get in. Yes, another project is on the horizon.

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Thomas Viano
'72 280 SE 4.5, over 100,000 miles