My truck has been making a horrendous grinding when I get on it from a stop, if I take off slowly it is ok. It sounds like a metal on metal grinding and I thought it was my rear end but I figured out that my truck has bad axle wrap and it is forcing my driveline to hit the carrier bearing housing. I had never had problems with it until last weekend in Pismo. I lubed up all the fittings on the driveshaft and took the slip yoke apart and greased it and it is still hitting. Anyone have similar experiences that can shed some light?