I haven't actually measured it! Hoping to look into that this weekend. At a guess the rear dropped about 30mm at least and the front I am guessing rose about 10mm at least. Just found the weighbridge ticket and its listed at 159kg towball weight with a total tare of 1055kg, so a little on the high side or normal ball weight wise.
It did have a full water tank and full gas bottle and all the awning walls, poles and bed flys were just behind the front boot. Will weigh it all up myself just to be sure.
Set her all up after I got home and very happy with the new toy!