New check straps for the rear axle arrived, and have been installed. Finally a set that fits. I had ordered two other sets previously, from other suppliers, and both times they were too short. However, these ones were supplied by Paddock's, made by Dunlop, and fit like a dream.
On other subjects, have been chasing down the oil leaks on the rear lower right of the engine block, and it turns out that the bolts in that particular area simply weren't tight enough to hold in 40+ psi of oil pressure.
Did the tiny-est bit of off-roading on Wednesday, just to see what a Land Rover can do. What a pleasure. : )