Track Loc Questions.....

Okay, I lifted one wheel (the other still on ground) and the wheel turned with some resistance. First in reverse then in neutral. When I put the trans. into first and the wheel would not turn. Back in neutral and it turned with resistance. I then lifted both rear wheels and the wheels turned in opposite directions wether it was in a gear or not. Dropped the wheels and lifted just one and it wouldn’t turn in gear but did in neutral (with some resistance).
I will be taking the Jeep to a shop that I know next week. After watching several videos I decided that I am not going to try the repairs myself.