I don't have any difficulties in this area (yet), but I've seen a fair number of posts in the past from people who do. I came across this article and liked it because it not only describes how to work with it, but there are pictures as well.
http://www.triathletemag.com/story.cfm?story_id=9496&publicationID=92&pageID=1732
Hope the info can help somebody.
Sharon