TJ Jim not a leaf sprung YJ or CJ. Dude?

Steering box STOP, zero chance. The internet and forums can empty your wallet long before you ever find the real culprit.

Dealers are good, but not the end all be all of diagnosis.
You will spend a fortune and not get much.

a 4x4 shop specializing in jeeps is best, they have an interest in seeing you back for more mods and service.
They will do "basic shake down of the front end and a toe check" inside of a few minutes. 98% of the time this will find a problem or two that will most likely solve the problem.

SD