Help rear end noise when turning right
So the car is a low miles 36k or so with a 3.27 rear end that was installed about 3k miles ago. I did the install and the fluid was filled with Royal Purple 75-90 and all seemed well with the exception of a slight gear whine. I attributed this to just a slightly louder gear set and bushings.
This week I noted that the car started making noise when turning right. At first I thought it was stuff rolling around in the trunk. I had some tools in there from when I was breaking my damn wing into pieces removing it. Anyway, today I swap mufflers back to the GXP's and clean the trunk out. On the first drive I realize I have a problem right turns make a noise that could be descibed as a scraping gravel type sound with clunking. The clunking you could feel in the floor boards if you go fast enough and turn sharp enought. (20 mph right hand turn). I can also make the sounds just turning circles in my court. Turning left or going straight I have not noise. This occurs regardess of if the car is hot or cold.
I just replaced the fluid. I could not see any metal in the fluid. It was black and stank with a little sluge like goo on the plugs but other than that it was clean. Replacing the fluid seemed to have little affect on the noise other than perhaps the clunks might not be as loud. I again used Royal Purple 75-90.
I'm not sure if the axles, the diferential or what I should do next to find the problem. I can turn a wrench and change out parts but I'm not sure I want to break that thing open. I'm not really looking forward to pulling the axles out again simply because getting a decent alignment around here is such a PITA.
Open to suggestions and any advice would be appreciated. Not sure why a new differential would go bad so soon if that's whats happened? I'm hoping maybe it's something else I have not thought of.