<b>What Broke</b><br>To try and torture our OX we put our Atlas transfer case into front-wheel drive, locked the OX, engaged the emergency brake, put it in gear, and violently spun the front tires in loose soil while steering back and forth. The result was a spit-out 297 U-joint cap. We pounded it back in and installed a new clip and went for a short vertical climb with substantial throttle. It popped the cap out again because the shaft ear had been hogged out and the cap had spun again. But no locker problems. If you plan to really abuse your Dana 44 you'll probably want to upgrade to full circle clips and chrome-moly shafts.