The reason you found the superflash is because it has a habit of bouncing out of its quick release mount. It's a known issue that you have to live with or find a way to secure the light better to the mount if you are going to use superflashes. I use them and have had one pop off. But I run redundant lights and can usually hear something hitting the pavement it if comes off the bike so I can circle around a get it. Doesn't keep it from potentially getting crushed by a car though before you can retrieve it.