The videos on 501parts are awesome!! I was headed to the dealer to buy a brand new servo motor for $375 until I found out that the unit could be repaired without replacing the whole assembly. I opened the servo and this is what I found. After a call to 501parts, he told me how to clean out the case, I ordered a new servo motor and within a week, it arrived and my 4wd was like new again and only for $55! Thanks!