using factory tapered bearings, yes the thrust block is installed, yes Cass is all over this and agree's there is a problem, the only way to reduce the 'rattle' is to tighten up the bearing end float to less than the 0.008" recomended however axle bearing failure is likely due to no end float, yes again under load it finds its centre as stated, it does not make a noise under load, the issue is on coast and around parking lots,,, its freaking loud. wheel bearings are brand new.