When I put the car in reverse, the tail end lifts up a few inches.  When I
put it in reverse, it sits down, almost like it's on the rear axle.
Checked the differential mount this weekend, and it seems to be in good
shape.

However, the ride is really very smooth, especially through dips, where
the car almost ignores them, even here in West Texas where we have some
pretty crowned roads to channel our thunderstorms down the hills.
Crossing one of these with any sort of speed in my Explorer and I'm
airborn, but the MBZ takes it without much excitement at all.

I'd say it was my shocks, but putting my weight on any corner and then
releasing results in a quick return to stability, no shaking.  That's dips
- little potholes in the road seem to rattle through the whole car.  Not
super bad, but enough to cause the jack to rattle in the back end.

I'm not sure what part the self-leveling suspension is supposed to play in
all of this.

Any suggestions?  Measuring the height of the rear bumper, it's the same
in the morning as it was when I parked it 13 hours before, even over a
weekend, so there doesn't appear to be a leak, no fluid on the driveway,
etc...

I don't want to buy shocks, or even get into that mess without a good
reason to do so.

Thanks for any input!

Tweaks