I had some of the same issues. There is a couple of brackets that gets in the way of the plastic. The one loop cable guide you can bend a little to make it work, but the bracket mount for the brake I had to trim some plastic on the back side. It wasn't too bad and when I was done it worked out very well. I have heard a few people just cut off those brackets, but I would recommend just trimming the plastic. I looks great once you are done but it was a bit of a pain in the neck. I also used some of that culvert looking black plastic cable sheaths to run the cables through an it gave it a nice finish