Just purchased my 2015 Ram, came with stock black plastic bed rails. The two back tie off holes closest to the tailgate are open like you would usually expect, the two closest to the cab have the outline of the square tie off, but it does not pop out it's permanenty closed. I need to get a 1" pvc pipe in there, which fits in the back open holes. I was just gonna put a 1" router bit on a drill and cut a hole through the plastic. Does anyone have a better idea?