I installed Bullitt Springs and shocks on the rear of my car tonight and used ProThane Isolators on the Springs, I almost didnt use the top one because the springs came with new rubber ones attached. Anyway, with the car on stands and the suspension at droop I was able to rotate the springs with my hands because those Isolators are so slippery. Do I need to take them back off and put the factory rubber one on top, or am I ok as is? BTW the car dropped approx 1/2" after install and looks really good!

) but once you load the suspension, the springs dont budge when you try to rotate them, right?
J/K.