It's not free, but paying a certified mechanic with platform experience would save a lot of new members a lot of heartache. Finding a friendly forum and asking what are common problems before you get it inspected is one way to help out a competent mechanic who might need some platform-specific knowledge.
Trust, but verify.......everything.
Now you have to change all (100%) the fluids, especially the transfer case, to have a fresh trustworthy baseline for future fluid changes.