Mine did that at one time with the D44. Not sure what I did that "fixed" it, but here are some things that may have helped
1: made a trac bar
2: upgraded leaf springs to stiffer 44044's and poly bushings (may have just been poly bushings that helped)
3: tires. Mine did it most with 33" Mickey Thompson Baja Claws. (bias ply's)
It's been so long ago since I had the D44 and death wobble problems, I don't remember what "fixed" it.
I do remember someone saying to have a HAIR of toe-out (seems odd I know), but I do think it helped mine, but didn't "fix" it.
