DO NOT adjust the bars with the car weight on them. I worked for 30+ years at Chrysler Engineering as a mechanic. The bolts as they wear can shoot out of the blocks with car weight on them as you turn the bolt. I know of two cases, one resulted in a broken shoulder and the other was a broken arm and this was only at Engineering. Chrysler cars in the beginning had the anchor's under the driver seat. One bolt (while driving) came out, went thru the floor pan and into the drivers leg. That is why they were moved to the control arms. I can't stress enough how dangerouse it is with the car weight on them. Jouncing won't work to check heights. The car has to be rolled back and forth after adjusting to get the proper measurement.