XJ doors won't open
 

I am looking to buy a '92 XJ for $800. The only problem is 3 of the 4
doors(all except the drivers) are stuck shut. The story is the guy only
drove it to work so the only door used was the drivers. I did manage to
play with the rear drivers door a bit and was able to get the lock
mechanism to move, very stiff, but still was not able to open the door,
outside button pushed in but door did not move. I really don't want to
buy the jeep if I can't get the doors open, as I have 2 kids.

Will I be able to get the inside panels off with the doors shut to be
able to check/free up the linkage?

The rest of the Jeep is in pretty good shape for a '92, so I think it
may be a great deal even if I have to put a little work into the doors,
but I don't want to buy it if the doors will never open again.

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