Guys , help me with this one. I'm right at 10hrs 1min on my break in and I've been reasonably nice to the mav , no water , no mud yet . Just trails and bumpy terrain. First thing is at about 9.5 hours I started hearing a slight howl from the rear diff or gear box which I beleive is normal according to forums ,but if parked and I rock it from side to side . I hear a noise similar to a hammer tapping on a pipe coming from the rear and I cannot pin point it . I thought diff , yoke, axel, but doesn't seem to be any of those . Somebody please try this and let me know if I'm not the only one or if I'm missing something . Thanx...