Perhaps a little history on the axle is in order.
It has a Lockright in it that I installed 100k ago. R&P lost some teeth 40k and about 9 years ago, replaced with factory gears. The driver's side outer seal went bad shortly thereafter. Again, wheel bearings have never been touched.
I've jumped this thing hard many many times. A few times it has landed very hard on the rear. (One time I sprained my ankle on the landing
)Since I've had a replacement Daily Driver for the last 8 years its been doing duty as the beater/dirt bike hauler.
I'd like to test the wheels. I've had them rebalanced recently with no change in wobble. I swaped wheels with a friend that wanted to run my Mud Terrains for a trip and he didn't notice any wobble. But that doesn't mean it wasn't there. I do have a newer unmounted wheel that is a takeoff from a '06 Tundra that is going on my 4runner. I can use that to check for runout.
It will have to wait until the weekend. Looks like I might need to delay the work on the 4runner.