3000S DIFF MOUNTS

[plasticpig1972]

When i reverse up a slope sometimes i hear a creaking noise.
I wonder if it could be to do with the Diff Mounts.
When i bought my 3000S i found the 4 horizontal Bolts into the Diff very loose.
Maybe there is some play in the Top mounts also.
At least with the 3000S it's easy to remove the Panel above the Diff to have a look.
Do i need to look at anything special or just use a Lever to see if something has play.
thanks in advance
Alan