So I'm getting this knocking/creaking sound from the rear when I take off from a standstill. Doesn't happen all the time, but usually when weight shifts from front to back. I just did the RTAB's, rear sway bar bushings and endlinks, which did not fix the problem. Planning to do the rear shock mounts next, but I am wondering if that does not fix it, what else could it be? Any help would be appreciated.