I'm still working through the noise in the Jeep. At this point, all 4 CV axles were replaced (and I got nicely ripped-off in the process...) and the noise is still there. The noise sounds like it's coming from a rotating component. There is now a banging noise when going from drive to reverse. I put the Patriot on ramps and found rotating play movement at the rear differential flange (where the rear U-joint bolts onto it) of about about 1/2"- 3/4" if I grab the driveshaft and twist it. I'm not too familiar with differentials and don't know if that's too much. Can the rear differential be the culprit?