put your feet ont he ends of the draglins next time it wobbles... if it straightens up.. hubs are liekly ok, and it may be tie/drg ends.. or steering box.
pull over and grab the draglinks and move fore / aft and see what's loose.
ends are replaceable.
hub loose may mena bearings, if it ain't wallowed out yet.
steering backlash or play might be adjusted out.. might have to refurb box ( not a big deal )