Hey, i have a 98 sportage 4" lift on 31s with warn manual hubs. Got the first snow last night and locked in the hubs and put in 4 high and started to move and a loud pop came from front passenger side sounded like the axle locking and unlocking. It keeps doing it every time the tire slides. It doesn't pop with just the hubs locked in, only pops when transfer case is engaged. There has been a vibration coming from front passenger side for a while, so my guess is it has to be the wheel bearing.( never changed 150k miles on car) I've never changed one on a 4x4, is it the same as a 2wd? Pop hub off and bearing sets behind the hub? Or is there more work involved since its a 4wd?