Bad wobble in front end

[beastmode86]

  Hey guys trying to track down the wobble in my front end at 25-40 mph. I have a 86 c10 350ci/th350 with 3.73 gears. I'm at factor height, running 20 inch rims. I'll start with the new parts I've added. Upper/lower ball joints, inner/outer tie rods, pitman and idler arm, sway-bar bushings, control arm bushings, shocks (all the way around) brake rotters/pad/caliper, front wheel bearings, new yokes and drive shaft balanced. After I rebuilt the front end I did get an alignment. I've heard of the "death wobble", but not much info on 1500 trucks. Thanks for any help. 

[beastmode86]

Ended up being a weld on the inner rim causing a flat spot.