ok, on my qwest to find the mysterios clunk from the front of my bronco i can upon something interesting, i am not sure if its suppose to do this but this is what happened. I was checking the front drivshaft from the transfer case and it had alot of play in it, which i am use to, but if i turned it more it would "lock", and i would hear the front left wheel lock up as if it were enguaged into 4x4. then u stareted up the truck and backed it up and sure enough i heard it disenguage. is this a problem or is it normal, and if it is a problem could this be the cause if the clunk i hear, thanks.