Sorry Roger - I see that I didn't answer all your questions. Camber effects ride height but not significantly. and can be ignored. When you drop your car back to the floor the wheels are at full droop camber (major positive camber on the front) They are at a smaller track width because of this. When they touch the floor they are unable to move laterally and will keep the car "jacked" up. You need to roll the car back and forth a few times. Turn the steering wheel through full lock to lower the front. Weight on the front or rear of the car effects both the front and rear suspension - that is weight on the rear for example doesn't just lower the rear suspension- it's somewhat distributed to the front as well, lowering that too. My experience is that used torsion bars, that have been off the car for a while settle down after reinstallation. By that I mean they sag after a few miles of use. Makes using the setting gauge Jaguar recommends a problem. The car sits at the right ride height for a short while then sags. I've got no experience with new bars. The rear springs don't seem to act this way. My experience with this extends over three or four cars that I've redone.and it's consistant car to car. I now install adjustable torsion bar reaction tie plates.on all my E Types.