I'm in the midst of attempting to install my ISO grips which just arrived. It seems that I have loosened the cables as much as I can by loosening the retaining nut, and then turning the barrel adjusters as far as they will go ccw. The top cable is just about to the point where I can push the ferrule through the hole, and then get the cable out of the opening, but the bottom cable is not that loose, so I seemingly can remove neither. What am I missing to get them loose enough to get them out? Thanks.