I bought a used wrx with BC Coilovers installed. Need to adjust the height, hits bottom way too often. Finally got the needed wrench. Looks like the height is adjusted at the bottom of the body, loosen the nut and turn the body out of the lower end. Does this require to loosen the spring? Then I'd like to give the springs a bit more tension to counter body roll... Could anyone please give me instructons for how to adjust these ?