I bought the short angled highway pegs mounts 50830-07A to put on my '11 FLTRU, but they don't seem to fit. The clam shell seems too small, or my crash bars too fat. These supposedly are made to fit my bike, however I was having a hell of a time trying to mount them today. It almost seemed like I was gonna crush my crash bars trying to get them on. Am I doing something wrong??