I'm finally getting around to replacing my rail cushions. I have read every thread on how to do it. I am nervous about making sure the cushion is on evenly. I have never done this, or even seen this being done. I have stripped all of the old glue. One of the threads mentioned rolling the rail after it was glued with a wallpaper roller. Stupid question, but do you do both sides with the roller or just the top? How quickly will the glue set? I am using Barge. I am a confessed hack and I am not a perfectionist.