Make a 1/2 inch thick aluminum plate and sandwich it between the front spring hanger and the frame. That centers the axle and moves the yoke out. Then add solid lowering blocks of you need them
I did that "chassis stiffening kit" from US Cartool. The front of the spring runs right into the frame pocket that comes with the mini tub aspect of the kit. IE no more place to shim in front......although I could just drill another hole in that pocket. hmmmm
