hey guys i have a lot of slop in one of my trucks in both front and rear end, should i just tear it down and rebuild them? are the castor blocks that are stock in the ft kit 30 deg? one truck has enough space to place one washer on the axle to set the height and the other truck dont have enough space for any, so how do i go about setting the axle height if i can place shims in there or can only use one?