If you have key #2238 to the Natcar Lab, it works to open the door. I
have personally seen it work this morning; it does stick a little at
the beginning of the twist, but a LITTLE extra force gets it past that
bit of stickiness.
Gershwin is getting some Tri-Flow Lubricant for the lock.
BTW, he says that he has been told NOT to use WD40 in locks. After a
while, it tends to gum up, and make the locks sticky.
Mike