Clicking In wheel Well

[OUTLAWPilot]

So due to an unfortunate fall and a dislocated ankle, my wife gets the pleasure of driving my junk. As she pulled up to pick me up from work I noticed a "tinny" clicking sound coming from the front passenger side wheel well. I quickly assumed hub. It seems to only do the clicking at slow speeds (or perhaps I just cant hear it above 10-15 mph), but it sounds to be about one click per revolution. It doesnt matter if the hubs are locked or auto, or if its in 2wd or 4wd...it always makes this click at slow speeds. Does it under accel or decel in all previously stated cases. I have 122K on the pig, and just recently had all four balljoints replaced and the tech (Ford dealer, powerstroke tech) said that everything looked great on the front end and hubs (of course crap can fail at any time though). Any ideas??!?

[OUTLAWPilot]

A new find to add to this issue...

After getting stuck in an inch of snow (there was ice under the snow, and yes, i need new tires really soon...) I flipped the shift on the fly to 4wd. Hubs were in auto.... no joy. I have used the shift on the fly probably a dozen times with the hubs in auto, and now it decides it doesnt want to work anymore. I assume the issue is related to the clicking sound that is being produced from that wheel well.

I am somewhat familiar with the seals and what not in the hubs, and I know the auto feature likes to fail on these fords, but I dont want to associate all problems to the hubs. If anyone else had has a similar clicking noise from their wheel well, please let me know what your find was. Thanks.