Rear air suspension

I spoke to a independent landrover garage today about my rear suspension.

He said its needs to be set up as its a bit low on the back end.

Has anyone had this before.

I was told to 'reset' & calibrate it howvever it doesnt seem to make a difference

it doesnt sink right down i dont think its a leak issue & the compressor is not old

it was fitted new about 7 months ago

when i load up the ifor williams it dosent sink more it still brings it back up to the same hight
just a bit low.

Im in somerset & would be grateful to any help to sort it. If i need to go to a garage i will however id rather not

thanks in advance

Just needs calibrating

Yea thats what he said but he said its a 2-3 hour job

what does calibrating entail ???

Getting the car the correct height, supposed to use blocks but can use axle stands then pressing some buttons according to on screen instructions.

I can't see it taking more than an hour