Here's my advice. Keep any part of any that you may have left. Hey, we didn't manufactor them, but I've lost a few myself. Anyway, we have samples of some new ones, though we're trying to decide if flourescent pink or orange is of any of your liking. These new ones are actually pretty cool. I tested a demo set on a few trips the last few weeks and not a problem. So when we have them ready for distribution, simply send me an email (better yet, I'll post another employees email address) and we'll send replacements for those that you had problems with....at no charge. Now, I'm so convinced you'll like these new ones that I'm sure you'll buy more of them to see others on the road. Now, what color......floursecent pink or orange?