Hi Everyone. I am a newbie to the off road world so my question may be purely naive. I just bought a 2008 Rubicon Unlimited that was stock with front and rear locking differentials. When I press the button twice to engage both lockers (while in 4wd low) the lights on my instrument cluster flash until the lockers are engaged (presumably). As soon as I slowly move either forward or in reverse the lights just begin flashing again. Does anyone have any idea why the lockers would not stay engaged? Any and all help would be greatly appreciated. Thank you.