Finally got to the bottom of the height difference of the rear springs today. Swapped the springs over again- it was still 66.5cm from ground to arch on offside rear, and 67.2cm on near side rear. Springs out again- they are almost the same length (bar 1mm). Bugger. Ok so swapped round again. mmmmm what now?- measured axles, bushes, ground to arch, ground to spring base- all same on the rears.....mmmm. Ok so moved to the fronts....so we have 0.2-0.3cm difference between front offside (higher) and front nearside (lower)- so we jacked up front right (just slightly) so both fronts were same height and low and behold..... rears are now same height!!! Turns out coz the 150 tonne bhp derv engine is on the left hand side of the engine bay, and my massive gut sits that side of the car, the front offside spring is the cuplrit, and has settled quicker than the nearside, pitching further forward- which in turn has pitched the rear nearside up!! So even after just a few minutes jumping around on the front nearside door sill, the heights seem to stay the same. Quite relieved that its just the extra weight on the front effecting things, and it will prob settle for good pretty soon. At least its not a bent axle, or bet chassis or anything!! phew.
