Good Afternoon

I am looking for some advice please.

My 2006 Sport was wallowing so I replaced all the struts, but now, especially the rear suspension seems very hard.

The front is fine on potholes, bumps etc, but when I hit one with the rear it bangs through the whole car.

I know L320's are much harder than the L322, but it is very harsh.

I have calibrated the suspension to 465mm all round, but someone suggested I may cure this problem by dropping it 10mm-15mm on each corner, this to load the shock absorbers more. Before I try this I would appreciate your thoughts, and any other suggestions please.

Thanks in advance.

Andy