Recently the lockout on my lefty has started to work its way to the locked position on its own when riding. It is starting to get annoying, happening about every mile or so. The fork has probably 500ish miles on it and off of an 08 Rush 3. Any suggestions to check or anyone else having this problem? My LBS hasn't been any help at all other then saying they can send it back to Cannondale, I just don't want to be without a bike for that long unless it is really necessary.