Thought the jdm bilstein rears had adjustable spring perches, so I compressed the spring, bashed the perch up... no extra circlip groove. So I put it back on, figuring the spring would settle the perch back down. No dice, so then I bashed on it some in the car, still high. So then I decided I'd try the fun way, and just rally some dirt roads aiming the left rear tire at potholes. And... worked like a treat! Also way fun, and damn do the bilsteins ride nice over washboarded roads!