Ive had that problem several times with the automatic lockers.....check your air pressure in your tires, i know it sounds stupid, but make sure both tires on each side of whichever diff is locked are the exact same diameter.....if the are even off by a 1/4" then it will cause havoc on detroits, aussies, eatons....all of them....big problem with detroits, if your air fluctuates in one tire, itll make it drive crazily, and then you add a lil bit and itll straighten everything right up
