Yes there is a right way and a wrong way to install a C / E clip. 80% of all the clips from the factory were installed backwards. This increases the chance of them coming off while running. Clips are made of stamped metal. One side will be smooth and the other side will have a sharp edge on it. The stamping process will also somewhat cup the clip. Clips need to be installed with the sharp edge to the outside or away from an moving part that will rub on it. If its on backwards the chances of them coming off is significantly increased. I have read post after post about people loosing clips in the field. May this be the reason? Just something to keep in mind as your wrenching.