I'm installling brakes on my bike for the first time, and I have a question. I am installing avid shorty cantilevers on drop bars, using dia compe brake levers. My problem is that no matter how tight I tape down the cable housing on the bars, the lever pulls the housing through the hole in the lever where the cable runs . I assume this is incorrect. When I pull the brake lever there is friction from the housing going back and forth inside the lever. How do I stop this from happening/ what am I doing wrong?