I took my truck to ford today and they replaced the vacuum s-noid and fix the loud gear popping sound. But since I rasied the front with the beilstien 5100 adjustable struts it soundes like I am running 44's on the front. It sounds just like the front bearings are in a bind and when I put it in 4x4 hi the noise stays just chages to a higher pitch. Does anyone have any suggestions before I set it back to factory higth...was I supposed to add somthing else with this shock