One wheel locked

If your truck sits a lot, then just rotate the outside tire 180. I know the valve stem will now be at the same spot as the inner, but the flat spots will be off set. IMO.

 

Glad it was just a rusted brake issue..

 

I have the same problem, i guess. My pete been seating for a month now and the same side as your 3way lock, front rght drive axle won't turn. I will get my gear and hit the drums. Thanks guys.
We still got snow here in Montreal and temp is below 13 but next week is spring.

 

Sometimes you can gently rock the truck forward and backwards and they'll unstick. Used to have that problem every weekend after washing the truck in winter. I just released the brakes and if it wouldn't roll freely down the driveway in neutral I'd just put it in reverse and give it just a tiny bit of torque (like if you were trying to reverse a couple inches). Usually they'd pop free right away.