ElizabethS -
Try other things, but keep using the butt'r!! My first bike tour was this past October, and I found that the chamois butt'r was really COLD first thing in the morning....I was so sore the end of the day I hadn't used it that I kept the bottle in my sleeping bag! Depending on when your tour is, you may also want to consider that!
Good luck finding some shorts that are a better fit for you!