New leafs too high, how much will they settle?

The big problem with the Mexico springs are.....WHEN will they stop settling AND since the spring is obviously compromised, how LONG will they last and what RATE are they now? Because you know all that has changed from their original specs.

The rate doesn’t change, same as torsion bars, same as any spring steel. The spring will sag and the height will change, but not the rate.