My truck has the saggy butt syndrom. Im running 4 inch blocks in the rear. I want to go to a shackle flip soon but its not in the budget right now. My question is this: Is it ok to run zero rates in the rear while using blocks? My girlfriend wants to get me something for Christmas and I was thinking that a set of zero rates would be a good present 'cause I could use em and they aint expensive. What's y'alls opinion?