I have had local place with really good rating install icon stage 2 kit on my 4runner for like $680. They are telling me I do not need to do any retorque on the kit. I called icon and they recommend doing it after 500 miles. After driving little bit I heard some metal grinding noise one time when I went over a half foot ditch. First of all do I need to do retorque after suspension kit install? If I do need them how do I do it? Is there any instructions on how to do it for icon stage 2? I do not need any special tools for this do I? Assuming torque wrench is good enough. I do not really know what bolt on what part should be what torque setting on the kit.