Are we presuming that you bought new springs?
Do both rear springs have the same part number?

Did they both check out the same when you checked the spring rates?

I agree with Loren about replacing bad shocks. When people bring cars to me
to install lowering springs, if a shock is bad to start with, the bad shock doesn't get any better when the car is lowered.

Both Loren and I agree that a spring that is too short is too short, whether
a person paid $300 for it or made it too short themselves....and springs that are too short will beat up a suspension.

If I had mentioned heater hose or zip ties, you-know-who
would have had something negative to say.-Bob

Here's the link:
https://www.tamparacing.com/forums/c...sway-bars.html