further info - pug 306?

Hi
please read previous post on page 1018 - pug 306 lx diesel leans to the right.
bought this car 7 weeks ago but only discovered it leaning to the o/s the following day. i've checked it over and all seems well, shut lines ok, drives and brakes true, no wandering or pulling to left or right. wheel geomertry ok except for the ride height.

front n/s 645mm front o/s 635mm

rear n/s 640mm rear o/s 630mm

all measurements have been taken from the lower edge of wheel arches down through centre of hubs to the ground. i'm thinking that the rear torsion bar bearing has been replaced and not refitted properly or altered for some reason. any thoughts.