Broke the tip on mine too! Luckily I'd just bought it specifically for this job. Used a different tip, finished the job and returned the impact driver for full refund saying, "Why would I want to exchange it for another one with the same poor quality of bits?"I thought the screw was a locking thread. I didn't see loctite on mine. Then again that was the first thing I did on mine so it's been a while since I've done it. It did manage to break the tips off my impact screw driver.