steering messed up in 4x4

ok, well my trucks been great (140,000) and now i ave sme serious probs. well truck drives fine in 2 wheel. like a champ. but in 4x4 low or hi, it feels like 1 side grabs ten te other side. i saw the other tread about te rear end. but i thougt it migt be diff cause its up front. i changed both hubs cause my weel bearings had play. the ball joints are fine. and the cv joints are good. its never acted like tis , and by grab i mean 1 half turn on te steering wheel both ways. is it my diff?!? god i hope not. might ave to go to 4.10s if it is

and sorry but my h key is messed up

Yup, its the diff.... Time for new gears!

thats what i figured, time for 4.10s

tie rod ends and a new idler arm, they were shot to ****, thsnkd for the outside opinions guys