While driving my 88 runner with rock assault axle 30 spline 5/29 gears 6 shooter knuckles hydo assist steering, I get this very loud snap in the axle area. It feels like the front of the truck is lifting up when the snap happens. I have inspected it many times adjusted the leaf springs replaced the axles, rebuilt the wheel lockers etc. I have tried about everything and I can't find where the loud violent snap is coming from! has anyone ever had this happen to their truck?