With regard to your rear springs.
On my Daimler /jag mark 2, I noticed a sag to one side of the car.
I removed both springs, disassembled them, cleaned and oiled them, then measured the deflection, according to the workshop manual.
All appeared to be within specifications stated.
Reinstalled springs on the same side as removed, and then found that the sag was still evident in the car!
So measuring was of no help at all. The springs had obviously lost tension and the only way to correct the fault was to have them reset at a spring workshop.
So now that you have the springs on the ground, maybe its a good idea to have them reset at a spring place? Then you will be sure of what you are reinstalling is serviceable for many years to come.
Keep up the good work, in years to come you will marvel at what you accomplished...
