I have done a lot of bars. Just take your time and have patience. Some are real stubborn and then I leave for a day and work at it later. I use some silicone on the stubborn ones but WD40 is good too. I have also used a hair dryer to soften up the protective wrap on the wires that are in the bars. It lets them bend around those curves easier. You have to inch them along. Pull a little at the top, then push a little from the bottom, pull that slack up from the top, push from the bottom again...you get the picture. For putting them in be sure the wire ends are straight. I tie a piece of strong string on them to help pull the wires through. Again, push and pull technique a little at a time.