Ok, pulled the cluster tonight. I did not get as far as pulling the motor that drives the gears. I will get some ceramic grease as advised in the thread linked below.
The thread below describes the procedure to get to the odometer gears ince removed from the dash and another thread linked in there describes the procedure for getting the cluster ouf of the dash.
A couple of my own observations after pulling mine. The 2 screws on the underside holding the cluster surround in are located behind the recesses which house the buttons for antenna/door locks on the left and boot/fuel filler releases on the right.
There were 3 sets of cables to remove to get the cluster out once the surround is removed and the 4 screws holding the cluster are removed. 2 in the middle, one above the other. The other is a smaller connector located at the bottom left which can be pulled out last.
Contrary to the linked thread I only needed to undo 10 screws total to access the face of the speedo and another 4 to get the odo gearset out of the cluster. Remove the 6 screws in the recesses along the outside of one side. Then remove 4 screws which are in a line slightly in towards the centre of the back from the row of warning light bulbs. Push in 4 retaining clips and you can then remove the plastic cover from the front of the cluster.
As mentioned in the threads be very careful removing the speedo needle. Make a good note of how it is positioned so you can put it back later correctly. Pull off the casing from the trip meter reset button. Then remove the warning gauge and speedo facings. There is a clear plastic cover over the odo gearset. Pull it out carefully, it comes right out. Now unplug the two wiring connectors on the back side of the cluster behind the odo. Undo the 4 screws in that same area and the odo gearset will come out.
I did not see anything obviously wrong with mine but will try to do so in the next couple of days when I get the grease.
Good luck with you own.