It's easy to miss. You have to comb through the paperwork piece by piece in the box. I have one right now that I love, with a forever guarantee. It was cheap on eBay, just a pinch tackier than the stock one. I got used to the different feel in a day or 2 and now think it's actually a more accurate and smoother feel. I've had it about 2 months and it still looks like new.
http://cgi.ebay.com/ws/eBayISAPI.dll...m=390134626450