Hey guys, in a previous post I had mentioned a stutter/shudder at low speeds (0-15MPH.) I've heard U-joints or the 2-piece driveshaft's "carrier bearing" as being possible causes. However, before I go disconnecting the driveshaft or any other heavy-handed task, I thought I'd see what you all thought about the LSD possibly locking up, due to low fluid or due to the "slip additive" fluid being worn. A lot of guys with quad-cab HEMIS seem to have this issue on older trucks with old, dirty diff oil. I'm sort of leaning to this being the cause myself, because this shake is even worse if im taking off with the wheels turned. All of that being said, how difficult of a job is draining/filling the diffrential? Any input is appreciated!