I have a loud clunk in the front and rear suspension of my new 2010 Titan CC SE 4X4. This happens over potholes and especially speed bumps. I have traced it down and believe it happens on the rebound stroke of the shock. Greg from PRG knows of the problem and says Bilsteins will fix the problem and the front can be fixed with a shorter spring. I don't want the front to be lowered. I am talking with 3 dealers and none of them know of this issue(strange!). My thought is, will the Rancho shocks from the PRO-4X fix the problem? I have not found this issue mentioned in this forum(again strange). My truck is stock with no level or lift kits. The noise seems to be the shocks reaching the end of their extension! Help!!!!