In an attempt to help the rear sag until I get a suspension lift, I got a set of the moog replacement springs. And my hopes of a better ride were smashed as the bump stops are still only about 1/2" away from contacting the axle, right where the old springs were. Is this a common outcome with these springs? Or is my stock 4runner magically heavier in the rear than normal? I also only have approximately 1/4 tank of gas.