Hey listen Bucko, I could walk away right now and you could pound sand for all I care. You can take the info provided and do something constructive with it, or complain that people trying to help are just showing off. I asked you "under what conditions are you using 4WD"...................that was to try and get an idea if you are abusing the drivetrain. I do not think that two t-cases in 100 k miles is normal; therefore, as you didn't answer my question, I assume you must be driving around in 4WD when conditions do not warrant it. Therefore, I assume you have damaged the front diff by abusing it. So, suck it up and buy a new one.