I dropped by Yard-o-Led Viceroy Grand and ever since the cap doesn't close as well or as securely as it did, however, I can't find any physical difference in the pen. There are not bumps or dents that I've seen. When I first got it the cap closed with a very satisfying click and was surprisingly secure. Since the fall it stay put fine enough but certainly not as well as before. What should I do? Would Yard-o-led be able to help? Would they charge for a repair? I'm bewildered by what went wrong!