I have a zq8 it has been lowered with 4 inch blocks for a while now. Well it has always hopped bad, so bad that it actually split the blocks in half. From what I have read my hop shock is in good condition I've just been thinking that maybe being lowered that much if it is putting the hop shock at an angle that is makin it less effective or useless. Since it split the blocks I went back with a lowering spring with a 1 inch block also