Stuck Diff Lock Lever
I just finished doing that on my 95 Disco 2 weeks ago. It took about an hour to get it totally apart, cleaned up, relubed and back together.
Once you pull the console you have to drill out the rivets, then pull all the boots off. This gives yu access the the shifter. Spray everything liberally with WD40 or some similar type fluid. Particularly the points, on the bar that goes down from the shifter to the transfer cases, where they are joined to the shifter. These can be really prone to rusting and seizing. Spray lots and lots. That was the advice given me. This helps free everything up so you will not break the shifter in the future.
Next remove the bolts from the top of the casing where the shifting lever is. From here you can totally disassemble the shifter, clean it up and relub it before reassmbling it.
I was told to use white lithium grease on the shifter parts to keep it going and to make sure that at least once per month use the diff lock, etc. to keep it in good working order.
Brian